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Can drinking champagne reduce your risk of sudden cardiac arrest?

<div class="theconversation-article-body"> <p>“My only regret in life is that I didn’t drink enough champagne,” the English economist and philosopher John Maynard Keynes (1883–1946) is reported to have said. As it turns out, there may be a surprising ounce of truth to that quote.</p> <p>Picture this: a glass of champagne – bubbly, crisp and, for many, reserved for toasts and celebrations. Now imagine it being mentioned in the same sentence as a way to help prevent <a href="https://www.bhf.org.uk/informationsupport/conditions/cardiac-arrest">sudden cardiac arrest</a>: a condition where the heart abruptly stops beating, killing tens of thousands each year, often without warning. Sounds too good to be true, right?</p> <p>Yet, <a href="https://onlinecjc.ca/article/S0828-282X(25)00171-0/fulltext">a Canadian study</a> has uncovered a curious link. Using data from over half a million people in the health research database the <a href="https://www.ukbiobank.ac.uk/">UK Biobank</a>, researchers found that those who consumed moderate amounts of white wine or champagne had a lower risk of experiencing sudden cardiac arrest. Surprising, especially given the widely held belief <a href="https://academic.oup.com/eurheartj/article/46/2/173/7920813?login=false#google_vignette">that red wine</a>, not white, is what benefits the heart.</p> <figure><iframe src="https://www.youtube.com/embed/9JvI392Iep8?wmode=transparent&amp;start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <p>To rule out coincidence, the researchers double-checked their findings using genetic data – and the connection seemed to hold firm. This suggests there might be more to the story than chance alone.</p> <p>The study didn’t stop at wine. It explored more than 100 lifestyle and environmental factors tied to sudden cardiac arrest, including diet, exercise, air pollution, emotional wellbeing, body composition and education levels – all of which have been independently associated with risk. The conclusion? Up to 63% of sudden cardiac arrest cases could potentially be prevented by addressing these risk factors.</p> <p>Among all the protective factors identified, a few stood out: fruit consumption, regular computer use (yes, really) and moderate drinking of white wine or champagne were all linked to a reduced risk of sudden cardiac arrest. Why? That remains uncertain.</p> <p>One theory is that white wine contains antioxidants that may support heart health. Another possibility is that people who drink these types of beverages may also be more affluent and more likely to engage in other healthy behaviour, such as eating well, exercising regularly – and have access to better healthcare.</p> <p>But before you pop a cork in celebration, a word of caution: alcohol remains a complex and often contradictory player in heart health. Other large-scale studies suggest a <a href="https://www.bmj.com/content/356/bmj.j909">U-shaped relationship</a> between alcohol and cardiovascular disease. Non-drinkers may have a certain level of risk, moderate drinkers of one glass of wine a day <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC7020057/">may see</a> some benefit, but heavy drinking sharply increases the risk of high blood pressure, stroke and heart failure.</p> <p><a href="https://doi.org/10.1016/j.hrthm.2021.10.022">One observational study</a> involving over 400,000 participants even found that moderate drinking could raise the risk of <a href="https://www.nhs.uk/conditions/arrhythmia/">arrhythmias</a>, which in some cases can lead to sudden death.</p> <p>So while champagne may offer a hopeful glimmer, it’s no magic bullet. The study’s broader message was clear: it’s the overall lifestyle that matters most. Better sleep, regular physical activity and <a href="https://theconversation.com/why-heart-patients-have-trouble-sticking-to-a-healthy-diet-and-3-things-that-help-them-eat-better-239172">a balanced diet</a> significantly reduced the risk of sudden cardiac arrest – and could prevent nearly one in five cases.</p> <figure><iframe src="https://www.youtube.com/embed/jdgYN1QgKng?wmode=transparent&amp;start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <p>On the flip side, obesity, high blood pressure and chronic stress were among the strongest risk factors, along with lower education levels and exposure to air pollution. These findings underscore that preventing sudden cardiac arrest isn’t just about personal habits: it’s also about the environments we live in and the policies that shape them. Cleaner air, better education and easier access to nutritious food could all play a role.</p> <p>Sudden cardiac arrest is not entirely random. Many of the contributing factors are within our control. Managing stress, staying active, maintaining a healthy weight, getting quality sleep – and yes, perhaps enjoying the occasional glass of white wine – can all help. But the real power lies in stacking small, healthy choices over time. Prevention is rarely about a single change; it’s about the cumulative effect of many.</p> <p>And in case you were wondering: Keynes suffered a series of heart attacks in 1946, beginning during negotiations for the <a href="https://history.blog.gov.uk/2020/12/07/whats-the-context-signing-the-anglo-american-financial-agreement-6-december-1945/">Anglo-American loan</a> in Savannah, Georgia. He described the process as “absolute hell”. A few weeks after returning to his farmhouse in Firle, East Sussex, he died of a heart attack at the age of 62.</p> <p>Maybe he was right about drinking more champagne after all.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/255708/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em>By <a href="https://theconversation.com/profiles/david-c-gaze-312661">David C. Gaze</a>, Senior Lecturer in Chemical Pathology, <a href="https://theconversation.com/institutions/university-of-westminster-916">University of Westminster</a></em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/can-drinking-champagne-reduce-your-risk-of-sudden-cardiac-arrest-heres-why-its-only-a-small-part-of-the-story-255708">original article</a>.</em></p> <p><em>Image: Shutterstock</em></p> </div>

Caring

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Should Australia mandate cancer warnings for alcoholic drinks?

<div class="theconversation-article-body"> <p><em><a href="https://theconversation.com/profiles/rachel-visontay-2291993">Rachel Visontay</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> and <a href="https://theconversation.com/profiles/louise-mewton-2292647">Louise Mewton</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p>Alcohol causes huge harm in Australia, <a href="https://www.thelancet.com/article/S1470-2045(21)00279-5/fulltext">responsible for 5,800 new cancer cases per year</a>. Yet many of us remain in the dark about its health risks.</p> <p>In January, the United States’ Office of the Surgeon General, the country’s leading public health spokesperson, <a href="https://www.hhs.gov/surgeongeneral/priorities/alcohol-cancer/index.html">recommended warnings about alcohol’s cancer risks</a> should be displayed on drink packaging.</p> <p>These messages have already been made obligatory in <a href="https://www.thelancet.com/journals/lanepe/article/PIIS2666-7762(25)00001-8/fulltext#:%7E:text=In%20May%202026%2C%20Ireland%20will,warnings%20(following%20South%20Korea).">Ireland and South Korea</a>.</p> <p>So, do they work? And should we mandate them here?</p> <h2>Isn’t a glass of wine or two good for me?</h2> <p>Most of us know heavy drinking is unhealthy.</p> <p>Yet the belief a few glasses of wine helps protect against heart disease and other conditions has persisted. That is despite <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/acer.15299">evidence in recent years</a> showing the benefits have been overestimated and the harms underplayed.</p> <p>In fact, <a href="https://www.who.int/europe/news/item/06-11-2023-joint-statement-by-who-europe-and-iarc-to-the-european-parliament---raising-awareness-of-the-link-between-alcohol-and-cancer#:%7E:text=There%20is%20also%20clear%20evidence,for%20cancers%20can%20be%20established.">any level of alcohol</a> use increases the risk for several types of cancer, including colorectal cancer (affecting the large intestine and rectum) and breast cancer.</p> <p>In recent years, the <a href="https://www.ndph.ox.ac.uk/news/new-genetic-study-confirms-that-alcohol-is-a-direct-cause-of-cancer">evidence has strengthened showing alcohol</a> plays a clear, causal role increasing cancer risk and other serious health problems, as well as <a href="https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2802963">all-cause mortality</a>.</p> <p><a href="https://doi.org/10.1016/j.canep.2021.102049">One study estimated</a> how many new cancer cases will develop across the lifetimes of the 18.8 million Australian adults who were alive in 2016. It predicted a quarter of a million (249,700) new cancers – mostly colorectal – will arise due to alcohol.</p> <p>We know what causes this harm. For example, acetaldehyde – a chemical produced by the body when it processes alcohol – <a href="https://www.cancervic.org.au/cancer-information/preventing-cancer/limit-alcohol/how-alcohol-causes-cancer">is carcinogenic</a>.</p> <p>Alcohol also increases cancer risk through “<a href="https://my.clevelandclinic.org/health/articles/oxidative-stress">oxidative stress</a>”, an imbalance in the body’s antioxidants and free radicals which causes damage to DNA and inflammation.</p> <p>It can also affect <a href="https://www.cancervic.org.au/cancer-information/preventing-cancer/limit-alcohol/how-alcohol-causes-cancer">hormone levels</a>, which raises the risk for breast cancer in particular.</p> <h2>Australians unaware of the risk</h2> <p>While the harms are well-known to researchers, many Australians remain unaware.</p> <p>Figures vary, but <a href="https://www.cancercouncil.com.au/news/what-do-you-mean-alcohol-causes-cancer-nsw-communitys-views-on-alcohol-and-alcohol-policy-options/#:%7E:text=In%202022%2C%20we%20surveyed%20the,our%20last%20survey%20in%202019.">at best only 59% of us</a> know about the direct link between alcohol and cancer (and at worst, <a href="https://pubmed.ncbi.nlm.nih.gov/37247850/">just one in five</a> are aware).</p> <p>Perhaps the best evidence this message has failed to sink in is our continued love affair with alcohol.</p> <p>In 2022–23 <a href="https://www.aihw.gov.au/reports/alcohol/alcohol-tobacco-other-drugs-australia/contents/drug-types/alcohol">69% of us drank alcohol, with one in three</a> doing so at levels deemed risky by the National Health and Medical Research Council. For both men and women, that means <a href="https://www.nhmrc.gov.au/health-advice/alcohol">having more than ten standard drinks per week</a> or more than four in one day.</p> <h2>What are other countries doing?</h2> <p><a href="https://www.foodstandards.gov.au/business/labelling/pregnancy-warning-labels/pregnancy-warning-labels-downloadable-files#faqs">Like Australia</a>, the US already has warnings on alcohol about its impacts on unborn children and a person’s ability to operate cars and machinery.</p> <p>The US Surgeon General wants additional explicit warnings about cancer risk to be compulsory.</p> <p>This follows Ireland, <a href="https://www.wcrf.org/about-us/news-and-blogs/how-ireland-beat-the-odds-to-introduce-cancer-warning-labels-on-alcohol/">the first country</a> to mandate cancer labels for alcohol. From 2026, alcohol packaging will include the warning: “there is a direct link between alcohol and fatal cancers”.</p> <p>Other countries, including Norway and Thailand, are also <a href="https://www.nytimes.com/2025/01/03/world/alcohol-cancer-warnings-countries.html">reportedly investigating cancer warning labels</a>.</p> <p>Since 2017, alcohol producers in South Korea have had to choose between three compulsory warning labels – <a href="https://iard.org/science-resources/detail/Health-Warning-Labeling-Requirements">two of which warn of cancer risks</a>. However they can instead opt for a label which warns about alcohol’s risks for <a href="https://journals.lww.com/co-psychiatry/abstract/2021/03000/alcohol_use_and_dementia__new_research_directions.15.aspx">dementia</a>, <a href="https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(18)31772-0/fulltext?previewDate=09-01-2015+00%3A00+Europe%2FHelsinki%3Fcategory%3Dterveys%2Fapi%2Ffragment%2Fhtml">stroke</a> and <a href="https://www.niaaa.nih.gov/publications/brochures-and-fact-sheets/interrupted-memories-alcohol-induced-blackouts#:%7E:text=Alcohol-related%20blackouts%20are%20gaps,brain%20area%20called%20the%20hippocampus.">memory loss</a>.</p> <h2>Will Australia follow suit?</h2> <p><a href="https://www.cancer.org.au/about-us/policy-and-advocacy/prevention/alcohol">Australian health bodies have been advocating</a> for cancer warnings on drink packaging for <a href="https://fare.org.au/alcohol-product-labelling-health-warning-labels-and-consumer-information/">over a decade</a>.</p> <p>Currently, whether to include warnings about alcohol’s general health risks is at the discretion of the manufacturer.</p> <p>Many use vague “drink responsibly” messages or templates provided by DrinkWise, an organisation <a href="https://drinkwise.org.au/about-us/#:%7E:text=DrinkWise%20is%20funded%20primarily%20through,financial%20and%20in%2Dkind%20support.">funded by the alcohol industry</a>.</p> <p>Pregnancy <a href="https://www.foodstandards.gov.au/business/labelling/pregnancy-warning-labels">warning labels</a> (“Alcohol can cause lifelong harm to your baby”) only became obligatory in 2023. Although this covers just one of alcohol’s established health effects, it has set an important precedent.</p> <p>We now have a template for how introducing cancer and other health warnings might work.</p> <p>With pregnancy labels, the government <a href="https://www.transparency.gov.au/publications/health/food-standards-australia-new-zealand/food-standards-australia-new-zealand-annual-report-2018-19/4.-highlights/pregnancy-warnings-on-alcohol">consulted public health and industry bodies</a> and gave a <a href="https://www.foodstandards.gov.au/business/labelling/pregnancy-warning-labels">three-year transition period</a> for manufacturers to adjust. We even have examples of colour and formatting of required labels that could be adapted.</p> <p>Perhaps most promisingly, <a href="https://www.cancercouncil.com.au/news/what-do-you-mean-alcohol-causes-cancer-nsw-communitys-views-on-alcohol-and-alcohol-policy-options/#:%7E:text=In%202022%2C%20we%20surveyed%20the,our%20last%20survey%20in%202019.">four in five surveyed Australians support</a> adding these cancer-specific warnings.</p> <h2>Would it work?</h2> <p>We know the existing “drink responsibly”-style warnings are not enough. Research shows consumers find these messages <a href="https://www.tandfonline.com/doi/full/10.1080/16066359.2021.1884229">ambiguous</a>.</p> <p>But would warnings about cancer be an improvement? Ireland’s rules are yet to come into effect, and it’s too early to tell how well South Korea’s policy has worked (there are also limitations give manufacturers can choose a warning not related to cancer).</p> <p>But <a href="https://pubmed.ncbi.nlm.nih.gov/32359056/">a trial</a> of cancer warnings in one Canadian liquor store found they increased knowledge of the alcohol–cancer link by 10% among store customers.</p> <p>Cancer messages would likely increase awareness about risks. But more than that – a 2016 <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4883036/#:%7E:text=The%20results%20of%20the%20present,and%20changes%20in%20drinking%20intentions.">study that tested cancer warnings</a> on a group of 1,680 adults across Australia found they were also effective at reducing people’s intentions to drink.</p> <p>The evidence suggests a similar policy could replicate <a href="https://tobaccocontrol.bmj.com/content/20/5/327">the success of cancer warnings on cigarette packaging</a> – first introduced in the 1970s – at increasing knowledge about risks and reducing consumption. Smoking rates in Australian adults <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC4392189/">have declined steadily since these warnings were first introduced</a>.</p> <p>It may take years before Australia changes its rules on alcohol labelling.</p> <p>In the meantime, it’s important to familiarise yourself with the current national <a href="https://www.nhmrc.gov.au/health-advice/alcohol">low-risk drinking guidelines</a>, which aim to minimise harm from alcohol across a range of health conditions.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/246890/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/rachel-visontay-2291993"><em>Rachel Visontay</em></a><em>, Postdoctoral Research Fellow in Alcohol and Long-term Health, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> and <a href="https://theconversation.com/profiles/louise-mewton-2292647">Louise Mewton</a>, Associate Professor, Matilda Centre for Research in Mental Health and Substance Use, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/should-australia-mandate-cancer-warnings-for-alcoholic-drinks-246890">original article</a>.</em></p> </div>

Body

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Electrolyte beverages can help your body stay balanced − but may worsen symptoms if you’re sick

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/bryn-beeder-2260643">Bryn Beeder</a>, <a href="https://theconversation.com/institutions/miami-university-1934">Miami University</a></em></p> <p>For generations, <a href="https://performancepartner.gatorade.com/products">Gatorade</a> and similar electrolyte beverages have been helpful tools for athletes seeking a competitive edge.</p> <p>In 1965, <a href="https://explore.research.ufl.edu/historical-markers/gatorades-birthplace/">Dr. Robert Cade and a team of scientists</a> at the University of Florida College of Medicine created Gatorade to help their football players combat heat exhaustion and muscle cramps during long practices in extreme temperatures.</p> <p>The drink’s winning formula of water, sodium, potassium and sugar works effectively with the human body to keep users hydrated, refueling them with energy and optimizing muscle function.</p> <p>While I don’t work for or receive funding from Gatorade, <a href="https://miamioh.edu/profiles/ehs/bryn-beeder.html">as a registered dietitian and nutrition instructor</a>, I’ve watched how specific electrolyte beverages can be handpicked to boost hydration in hospitalized patients, student athletes and even myself.</p> <p>And while Gatorade was one of the first electrolyte beverages heavily marketed to consumers, its ingredient combination has paved the way for the creation of even more sport and electrolyte beverages on the grocery store shelves today. If you’re looking to gain a specific nutritional edge from a sports drink, you can seek out a registered dietitian for an individualized plan. Otherwise, if you’ve ever wondered what makes these colorful beverages a nutrition attraction, here’s a closer look at some key ingredients.</p> <h2>The importance of hydration</h2> <p>Whether people are athletes or not, the human body is constantly losing water through normal human functions such as sweating, urinating and even breathing. When water is lost, the body also excretes key electrolytes such as <a href="https://www.cdc.gov/salt/sodium-potassium-health/index.html">potassium and sodium</a>. These electrolytes are crucial for everything from heart function to muscle contractions.</p> <p><a href="https://my.clevelandclinic.org/health/diagnostics/21790-electrolytes">Electrolytes</a> get their “electro” name from having an electrical charge when dissolved in water. This charge allows them to work throughout the body in chemical reactions that maintain normal brain functioning, balance fluids inside and outside of body cells and even balance how acidic or alkaline your blood is.</p> <figure><iframe src="https://www.youtube.com/embed/l3VWb0mUS7Y?wmode=transparent&amp;start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption><span class="caption">Electrolytes can help you rehydrate after a workout by balancing fluids in our cells.</span></figcaption></figure> <p>Major stress on the body can accelerate the <a href="https://my.clevelandclinic.org/health/diseases/9013-dehydration">dehydration process</a> – whether it’s intentional, like running a 5K, or unintentional, like getting a nasty stomach bug. If left unchecked, dehydration can cause more serious complications, such as fainting and irregular heartbeats.</p> <p>To prevent these complications, you need to replenish the fluids and electrolytes you’re losing. Stressful scenarios such as exercise and sickness are a perfect time to consider an electrolyte replacement drink.</p> <h2>A closer look at Gatorade’s ingredients</h2> <p>Water, the main ingredient in most sports drinks, <a href="https://www.eatright.org/health/essential-nutrients/water/how-much-water-do-you-need">hydrates you</a>. The human body is made up of <a href="https://www.usgs.gov/special-topics/water-science-school/science/water-you-water-and-human-body">approximately 60% water</a>, so to stay hydrated, it is important to listen to your body and drink water regularly. When the body’s water volume is decreased, it sends thirst signals to the brain.</p> <p>However, these signals often lag behind your hydration status. So, once you feel thirsty, your body is likely already slightly dehydrated. For a more accurate hydration assessment, check the <a href="https://health.clevelandclinic.org/what-urine-color-means">color of your urine</a>. Darker yellow or golden urine? Grab some water. Pale yellow or clear urine? Keep up the good hydration.</p> <p><a href="https://my.clevelandclinic.org/health/diagnostics/21790-electrolytes">Sodium, another ingredient in Gatorade, attracts water</a>. When you are dehydrated, the body’s blood is more concentrated because less water is circulating overall.</p> <p>When you have a lower blood volume, your blood vessels don’t expand as much as they normally would – ultimately lowering blood pressure. If blood pressure drops too quickly due to dehydration, you might feel dizziness, lightheadedness, nausea or weakness.</p> <p>The good news is that sodium actively pulls water into the bloodstream. So during an intense workout or while dealing with a dehydrating illness, consuming a salty snack or sports beverage can help.</p> <p><a href="https://health.clevelandclinic.org/potassium">The potassium in Gatorade regulates muscle contractions</a>. This electrolyte is especially critical for regulating your heartbeat, and it also aids in normal skeletal muscle contractions. If the body lacks enough potassium, painful muscle cramps or dizziness can disrupt your workout or day.</p> <p><a href="https://my.clevelandclinic.org/health/articles/15416-carbohydrates">Sugar provides quick energy</a> and nutrient absorption power. A traditional Gatorade beverage contains glucose and dextrose, which are both known as simple sugars. A simple sugar is one that the body can quickly digest and absorb, with the goal of quickly increasing blood sugar.</p> <p>Strenuous aerobic exercise or strength training for longer than 60 minutes, performing activities in very hot or humid climates, or the physical strain of an unwelcome illness can all rev the body’s metabolism and quickly deplete <a href="https://medlineplus.gov/bloodglucose.html">blood glucose</a>. When glucose levels drop, you may experience fatigue, weakness, lightheadedness, nausea or difficulty concentrating.</p> <p>The nutrient combination found in Gatorade was designed with athletes in mind, but it is also sometimes discussed as a remedy to consider during an unpleasant bout of gastrointestinal illness. <a href="https://my.clevelandclinic.org/health/diseases/4108-diarrhea">Diarrhea</a> and <a href="https://my.clevelandclinic.org/health/symptoms/8106-nausea--vomiting">vomiting</a> are easy routes for electrolytes such as sodium and potassium to escape.</p> <p>Energy drinks’ combination of simple sugars, water and electrolytes may be one strategy to maintain hydration during a time when food and fluids are difficult to stomach.</p> <p>However, be cautious – many traditional sports drinks have a high sugar content aimed at refueling lost energy during a workout. When that same sugar content is introduced to an upset gastrointestinal tract, it can pull in extra water, leading to more diarrhea. If you find yourself in this situation, here are some other options to consider.</p> <p>Opt for a lower-sugar electrolyte beverage. Beverages to consider include Pedialyte or even a broth-based soup. Both will hydrate with minimal added sugar content.</p> <p>The human body is incredibly efficient at managing nutrients in the blood. In most cases, balanced meals and water consumption are enough to meet your daily nutrient needs. During intense physical exercise or an unexpected illness, however, the body may struggle to maintain its usual balance.</p> <p>If you notice unusual symptoms such as dizziness, fatigue or persistent thirst, your body will need attention. In specific cases of dehydration from exercise or illness, a sports drink like Gatorade can be a simple tool to help you bounce back to your best self.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/243763/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/bryn-beeder-2260643">Bryn Beeder</a>, Visiting Instructor in Kinesiology, Nutrition, and Health, <a href="https://theconversation.com/institutions/miami-university-1934">Miami University</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/electrolyte-beverages-can-help-your-body-stay-balanced-but-may-worsen-symptoms-if-youre-sick-243763">original article</a>.</em></p> </div>

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Been drinking and your heart’s fluttering? You may have ‘holiday heart’

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/caleb-ferguson-72">Caleb Ferguson</a>, <a href="https://theconversation.com/institutions/university-of-wollongong-711">University of Wollongong</a> and <a href="https://theconversation.com/profiles/sabine-allida-2236436">Sabine Allida</a>, <a href="https://theconversation.com/institutions/university-of-wollongong-711">University of Wollongong</a></em></p> <p>It’s the time of year for workplace Christmas parties, and gatherings with family and friends. Maybe you’ll drink a lot in one go.</p> <p>Then you feel your heart beating fast or irregularly. Maybe there’s a flutter in your chest or neck. Maybe you feel dizzy or short of breath. You may feel so concerned you go to the emergency department.</p> <p>After a few tests, you’re told you have “alcohol-induced atrial arrhythmia”. In plain English, that’s an irregular heartbeat brought on by excessive, or binge drinking.</p> <p>The condition is common at this time of year. That’s why it’s also called “<a href="https://www.sciencedirect.com/science/article/abs/pii/000287037890296X">holiday heart</a>”.</p> <h2>What is holiday heart?</h2> <p>Every festive season, emergency departments see more people with <a href="https://www.cambridge.org/core/journals/prehospital-and-disaster-medicine/article/impact-of-alcoholrelated-presentations-to-emergency-departments-on-days-with-a-public-holiday-or-sporting-event-a-retrospective-cohort-study/174603C0385FE6FCEBBAEA1A10DB25BD">alcohol-related issues</a> and <a href="https://www.heartlungcirc.org/article/S1443-9506(16)30583-2/pdf">irregular heart rhythms</a>.</p> <p>People often present with a fast or irregular heartbeats associated with binge drinking, overeating, dehydration and increased stress over the silly season – all contributing factors.</p> <p>We’ve known about holiday heart (or holiday heart syndrome) for <a href="https://www.sciencedirect.com/science/article/abs/pii/000287037890296X">almost 50 years</a>. Back in the 1970s, it was described as an abnormal heart rhythm (or arrythmia) in healthy people without heart disease after binge drinking alcohol. Doctors often saw this after weekends and public holidays, including the festive season.</p> <p>But an abnormal heart rhythm related to alcohol <a href="https://www.sciencedirect.com/science/article/pii/S2405500X22009379#bib2">isn’t limited</a> to the holidays and weekends. We also see it in people who binge drink at any time of year, or in people who drink heavily over many years.</p> <h2>What causes it? How is it diagnosed?</h2> <p>Alcohol affects your <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC5513687/">heart, blood vessels, blood</a> and nervous system in many ways.</p> <p>For instance, when alcohol disrupts your nervous system, it can lead to dehydration and inflammation. In turn, this can cause disruption to the heart’s electrical system, which can lead to an <a href="https://pubmed.ncbi.nlm.nih.gov/28867013/">irregular heartbeat</a>.</p> <p>People may go to hospital with heart flutters, chest pain, fainting or passing out (syncope) and shortness of breath (dyspnoea). But an irregular heartbeat can also occur without symptoms, and may only be discovered when investigating other health issues.</p> <p>If you have symptoms, go to your emergency department or GP. Health professionals will likely run some tests to diagnose heart-related rhythm problems.</p> <p>These include monitoring the heart’s rhythm using an ECG or electrocardiogram. This simple and non-invasive test involves attaching some electrodes to your chest, arms and legs to produce a graph of electrical signals from the heart. Clinicians are often interested in the “p wave”, which represents the electrical activation of the upper chambers of the heart.</p> <p>You may also have a blood test to look at your electrolyte levels (essential minerals in your blood). A blood test may also test for markers of clotting and inflammation, as well as kidney and liver function.</p> <h2>Why are we concerned about it?</h2> <p>The vast majority of people diagnosed with holiday heart will recover, especially if treated early or if they stop or limit drinking alcohol.</p> <p>However, some people will be diagnosed with <a href="https://theconversation.com/getting-to-the-heart-of-the-matter-on-stroke-7180">atrial fibrillation</a> – the <a href="https://www.heartlungcirc.org/article/S1443-9506(18)31778-5/fulltext">most common</a> heart rhythm disorder in Australian adults, affecting <a href="https://www.sciencedirect.com/science/article/pii/S1443950617304845">1.4-5.5%</a> of the population.</p> <p>If so, this may require medicines to restore a regular heartbeat (known as <a href="https://www.svhhearthealth.com.au/procedures/procedures-treatments/cardioversion">cardioversion</a>), electrical cardioversion (using a defibrillator to apply an electric shock to the heart) or a procedure called <a href="https://www.heart.org/en/health-topics/arrhythmia/prevention--treatment-of-arrhythmia/ablation-for-arrhythmias">cardiac ablation</a>.</p> <p>If atrial fibrillation is left untreated, there’s an increased risk of blood clots, stroke and a heart attack.</p> <h2>How can you prevent it?</h2> <p>There is no definitive number of drinks known to trigger holiday heart. So our best advice to prevent it is to avoid binge drinking. Australian <a href="https://www.nhmrc.gov.au/health-advice/alcohol">guidelines</a> recommend women and men limit alcohol to no more than ten standard drinks a week and no more than four standard drinks on any one day.</p> <p>We’d also recommend drinking water between alcoholic drinks. This can help reduce the dehydrating effects of alcohol and reduce the risk of alcohol-induced heart rhythm complications.</p> <p>Then do your best to <a href="https://journals.sagepub.com/doi/full/10.1177/2156587214543143">reduce stress</a>, keep up with exercise and eat a diet that’s <a href="https://www.heartfoundation.org.au/healthy-living/healthy-eating/heart-healthy-eating-pattern">good for your heart</a> – all general advice for looking after your heart, whether or not you’re drinking alcohol.</p> <p>Taking these steps will help reduce your risk of holiday heart and keep your heart healthy this festive season.</p> <hr /> <p><em>Information about alcohol and the heart is available from the <a href="https://www.heartfoundation.org.au/blog/alcohol-and-heart-health">Heart Foundation</a>. If your GP is closed over the holidays and you need health advice, call <a href="https://www.healthdirect.gov.au/">healthdirect</a> on 1800 022 222, <a href="https://www.health.vic.gov.au/primary-care/nurse-on-call">NURSE-ON-CALL</a> in Victoria on 1300 60 60 24 or <a href="https://www.qld.gov.au/health/contacts/advice/13health">13HEALTH</a> in Queensland on 13 43 25 84. In an emergency in Australia, call 000.</em><!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/241469/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/caleb-ferguson-72"><em>Caleb Ferguson</em></a><em>, Professor of Nursing and Director of Health Innovations, <a href="https://theconversation.com/institutions/university-of-wollongong-711">University of Wollongong</a> and <a href="https://theconversation.com/profiles/sabine-allida-2236436">Sabine Allida</a>, Research Fellow (Implementation Science), <a href="https://theconversation.com/institutions/university-of-wollongong-711">University of Wollongong</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/been-drinking-and-your-hearts-fluttering-you-may-have-holiday-heart-241469">original article</a>.</em></p> </div>

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Why do I get so anxious after drinking? Here’s the science behind ‘hangxiety’

<div class="theconversation-article-body"> <p><em><a href="https://theconversation.com/profiles/blair-aitken-1510537">Blair Aitken</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> and <a href="https://theconversation.com/profiles/rebecca-rothman-2231560">Rebecca Rothman</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a></em></p> <p>You had a great night out, but the next morning, anxiety hits: your heart races, and you replay every conversation from the night before in your head. This feeling, known as hangover anxiety or “<a href="https://adf.org.au/insights/what-is-hangxiety/">hangxiety</a>”, <a href="https://onlinelibrary.wiley.com/doi/10.1002/hup.2623">affects around 22%</a> of social drinkers.</p> <p>While for some people, it’s mild nerves, for others, it’s a wave of anxiety that feels impossible to ride out. The “Sunday scaries” may make you feel panicked, filled with dread and unable to relax.</p> <p>Hangover anxiety can make even simple tasks feel overwhelming. Here’s why it happens, and what you can do about it.</p> <h2>What does alcohol do to our brains?</h2> <p>A hangover is the body’s way of recovering after drinking alcohol, bringing with it a range of symptoms.</p> <p><a href="https://www.mdpi.com/2077-0383/10/23/5691">Dehydration and disrupted sleep</a> play a large part in the pounding headaches and nausea many of us know too well after a big night out. But hangovers aren’t just physical – there’s a strong mental side too.</p> <p>Alcohol is a nervous system depressant, meaning it alters how certain chemical messengers (or neurotransmitters) behave in the brain. Alcohol relaxes you by increasing <a href="https://my.clevelandclinic.org/health/articles/22857-gamma-aminobutyric-acid-gaba">gamma-aminobutyric acid</a> (GABA), the neurotransmitter that makes you feel calm and lowers inhibitions. It decreases <a href="https://my.clevelandclinic.org/health/articles/22839-glutamate">glutamate</a> and this also slows down your thoughts and helps ease you into a more relaxed state.</p> <p>Together, this interaction affects your mood, emotions and alertness. This is why when we drink, we often feel more sociable, carefree and willing to let our guard down.</p> <p>As the effects of the alcohol wear off, your brain works to rebalance these chemicals by <a href="https://www.sciencedirect.com/science/article/pii/S0191886918305762">reducing GABA and increasing glutamate</a>. This shift has the opposite effect of the night before, causing your brain to become more excitable and overstimulated, which can lead to feelings of anxiety.</p> <p>So why do some people get hangxiety, while others don’t? There isn’t one clear answer to this question, as several factors can play a role in whether someone experiences hangover-related anxiety.</p> <h2>Genes play a role</h2> <p>For some, a hangover is simply a matter of how much they drank or how hydrated they are. But genetics may also play a significant role. <a href="https://onlinelibrary.wiley.com/doi/10.1111/add.12699">Research</a> shows your genes can explain almost half the reason why you wake up feeling hungover, while your friend might not.</p> <p>Because genes influence how your body processes alcohol, some people may experience more intense hangover symptoms, such as headaches or dehydration. These stronger physical effects can, in turn, <a href="https://onlinelibrary.wiley.com/doi/pdf/10.1002/hup.2623">trigger anxiety during a hangover</a>, making you more susceptible to “hangxiety.”</p> <h2>Do you remember what you said last night?</h2> <p>But one of the most common culprits for feeling anxious the next day is often <a href="https://journals.sagepub.com/doi/pdf/10.1177/0091450915604988">what you do while drinking</a>.</p> <p>Let’s say you’ve had a big night out and you can’t quite recall a conversation you had or something you did. Maybe you acted in ways that you now regret or feel embarrassed about. You might fixate on these thoughts and get trapped in a cycle of worrying and rumination. This cycle can be hard to break and can make you feel more anxious.</p> <p><a href="https://doi.org/10.1016/j.addbeh.2023.107619">Research</a> suggests people who already struggle with feelings of anxiety in their day-to-day lives are especially vulnerable to hangxiety.</p> <p>Some people drink alcohol to unwind after a stressful day or to make themselves feel more comfortable at social events. This often leads to <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC9756407">heavier consumption</a>, which can make hangover symptoms more severe. It can also begin a cycle of drinking to feel better, making hangxiety even harder to escape.</p> <h2>Preventing hangover anxiety</h2> <p>The best way to prevent hangxiety is to limit your alcohol consumption. The <a href="https://adf.org.au/reducing-risk/alcohol/alcohol-guidelines">Australian guidelines</a> recommend having no more than ten standard drinks per week and no more than four standard drinks on any one day.</p> <p>Generally, the more you drink, the more intense your hangover symptoms might be, and the worse you are likely to feel.</p> <p>Mixing other drugs with alcohol can also increase the risk of hangxiety. This is especially true for party drugs, such as ecstasy or MDMA, that give you a temporary high but can lead to anxiety as they wear off and you are <a href="https://adf.org.au/insights/drug-comedowns">coming down</a>.</p> <p>If you do wake up feeling anxious:</p> <ul> <li> <p>focus on the physical recovery to help ease the mental strain</p> </li> <li> <p>drink plenty of water, eat a light meal and allow yourself time to rest</p> </li> <li> <p>try <a href="https://www.headspace.com/mindfulness/mindfulness-101">mindfulness meditation</a> or deep breathing exercises, especially if anxiety keeps you awake or your mind races</p> </li> <li> <p>consider journalling. This can help re-frame anxious thoughts, put your feelings into perspective and encourage self-compassion</p> </li> <li> <p>talk to a close friend. This can provide a safe space to express concerns and feel less isolated.</p> </li> </ul> <p>Hangxiety is an unwelcome guest after a night out. Understanding why hangxiety happens – and how you can manage it – can make the morning after a little less daunting, and help keep those anxious thoughts at bay.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/240991/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/blair-aitken-1510537">Blair Aitken</a>, Postdoctoral Research Fellow in Psychopharmacology, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> and <a href="https://theconversation.com/profiles/rebecca-rothman-2231560">Rebecca Rothman</a>, PhD Candidate in Clinical Psychology, School of Health Sciences, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a></em></p> <p><em>Image credits: Shutterstock</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-do-i-get-so-anxious-after-drinking-heres-the-science-behind-hangxiety-240991">original article</a>.</em></p> </div>

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What is methanol? How does it get into drinks and cause harm?

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/ian-musgrave-1808">Ian Musgrave</a>, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a></em></p> <p>Melbourne teenager Bianca Jones <a href="https://www.abc.net.au/news/2024-11-21/bianca-jones-dead-laos-methanol-poisoning/104630384">has died</a> and her friend Holly Bowles remains severely ill in hospital in Thailand, after experiencing suspected methanol poisoning while they were travelling in Laos.</p> <p>The pair are reportedly among <a href="https://x.com/Smartraveller/status/1858850858227954118">several foreign nationals</a> who became ill after unknowingly consuming alcoholic drinks containing methanol in the south-east Asian country.</p> <p>So what is methanol, and how does it make people sick?</p> <h2>Methanol versus ethanol</h2> <p><a href="https://en.wikipedia.org/wiki/Methanol">Methanol</a> is an <a href="https://en.wikipedia.org/wiki/Alcohol_(chemistry)">alcohol</a>, like the familiar <a href="https://en.wikipedia.org/wiki/Ethanol">ethanol</a> we consume in alcoholic beverages.</p> <p>Like ethanol, methanol is a colourless, flammable liquid. It has a smell similar to ethanol as well.</p> <p>But the two have different chemical structures. Methanol is composed of only one carbon atom, while ethanol has two.</p> <figure class="align-center "><img src="https://images.theconversation.com/files/633188/original/file-20241120-15-i7wr12.png?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/633188/original/file-20241120-15-i7wr12.png?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=300&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/633188/original/file-20241120-15-i7wr12.png?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=300&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/633188/original/file-20241120-15-i7wr12.png?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=300&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/633188/original/file-20241120-15-i7wr12.png?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=377&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/633188/original/file-20241120-15-i7wr12.png?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=377&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/633188/original/file-20241120-15-i7wr12.png?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=377&amp;fit=crop&amp;dpr=3 2262w" alt="Models of methanol and ethanol depicted with balls and sticks." /><figcaption><span class="caption">Methanol (left) and ethanol (right) have differing chemical structures.</span> <span class="attribution"><span class="source">Wikimedia Commons</span>, <a class="license" href="http://creativecommons.org/licenses/by/4.0/">CC BY</a></span></figcaption></figure> <p>That one carbon atom makes all the difference. It means methanol is processed differently in our bodies and is much more toxic than ethanol.</p> <p>Methanol is used in a <a href="https://pubchem.ncbi.nlm.nih.gov/compound/Methanol">variety of industrial and household products</a>, such as windshield cleaning fluids, antifreeze and fuel. It’s not safe for human consumption.</p> <h2>What makes methanol toxic?</h2> <p>The difference is in how methanol is metabolised, or broken down in our bodies.</p> <p>Ethanol is metabolised into a chemical compound called acetaldehyde. Acetaldehyde is toxic, but is rapidly converted to acetate (also known as acetic acid, found in vinegar). Generating an acid may sound bad, but acetate actually <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC6699882/">produces energy and makes important molecules</a> in the body.</p> <p>By contrast, methanol is metabolised into <a href="https://www.cancer.gov/about-cancer/causes-prevention/risk/substances/formaldehyde">formaldehyde</a> (a chemical used in <a href="https://www.safework.nsw.gov.au/hazards-a-z/hazardous-chemical/priority-chemicals/formaldehyde">industrial glues</a> and for embalming corpses, for example) and then to <a href="https://pubchem.ncbi.nlm.nih.gov/compound/Formic-Acid">formic acid</a> (the chemical in some ant bites that makes them hurt so much).</p> <p>Unlike acetate, which the body uses, formic acid <a href="https://pubmed.ncbi.nlm.nih.gov/1665561/">poisons the mitochondria</a>, the powerhouses of the cells.</p> <p>As a result, a person exposed to methanol can go into severe <a href="https://www.ncbi.nlm.nih.gov/books/NBK482121/">metabolic acidosis</a>, which is when too much acid builds up in the body.</p> <p>Methanol poisoning can cause nausea, vomiting, and abdominal pain. The acidosis then causes depression of the central nervous system which can cause people with methanol poisoning to fall unconscious and go into a coma, as well as retinal damage leading to vision loss. This is because the retinas are full of active mitochondria and sensitive to them being damaged.</p> <p>Death is not inevitable if only a small amount of methanol has been consumed, and rapid treatment will greatly reduce damage.</p> <p>However, permanent vision damage can occur even at <a href="https://www.ncbi.nlm.nih.gov/books/NBK482121/">non-lethal doses</a> if treatment is not administered quickly.</p> <h2>What does treatment involve?</h2> <p><a href="https://www.ncbi.nlm.nih.gov/books/NBK482121/">Treatment</a> is mainly supportive care, such as intubation and mechanical ventilation to help the patient to breathe.</p> <p>But it can also involve drugs such as <a href="https://go.drugbank.com/drugs/DB01213">fomepizole</a> (which inhibits the generation of toxic formic acid) and dialysis to remove methanol and its metabolites from the body.</p> <h2>How does methanol get into alcoholic drinks?</h2> <p>Methanol can turn up in any alcoholic beverage, but it’s most likely in beverages with higher alcohol content, such as spirits, and traditionally brewed drinks, such as fruit wines.</p> <p>Methanol can get into alcoholic beverages in a number of ways. Sometimes it’s added <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC8303512/">deliberately and illegally</a> during or after manufacturing as a cheaper way to increase the alcohol content in a drink.</p> <p><a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC5028366/">Traditional brewing methods</a> can also inadvertently generate methanol as well as ethanol and produce toxic levels of methanol depending on the microbes and the types of plant materials used in the fermentation process.</p> <p>We don’t yet know how the Australian teenagers came to be poisoned in this tragedy. But it is a good idea when travelling (particularly in areas with traditionally fremented drinks, such as south-east Asia, the Indian subcontinent and parts of Africa) to always be careful.</p> <p>The Australian government’s <a href="https://www.smartraveller.gov.au/before-you-go/safety/partying#methanol">Smartraveller website</a> advises that to avoid methanol poisoning you should be careful drinking cocktails and drinks made with spirits, drink only at reputable licensed premises and avoid home-made alcoholic drinks.</p> <p>Drinking only mass-produced commercial brews can be safer, though understandably people often want to try locally made drinks as part of their adventure.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/244151/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/ian-musgrave-1808">Ian Musgrave</a>, Senior lecturer in Pharmacology, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/what-is-methanol-how-does-it-get-into-drinks-and-cause-harm-244151">original article</a>.</em></p> </div>

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Matcha is having a moment. What are the health benefits of this green tea drink?

<div class="theconversation-article-body"> <p><em><a href="https://theconversation.com/profiles/evangeline-mantzioris-153250">Evangeline Mantzioris</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a></em></p> <p>Matcha has experienced a surge in popularity in recent months, leading to reports of <a href="https://www.smh.com.au/goodfood/sydney-eating-out/global-matcha-shortage-hits-australia-as-skyrocketing-popularity-rivals-coffee-20241101-p5kn6v.html">global shortages</a> and price increases.</p> <p>If you haven’t been caught up in the craze, matcha is a powdered version of green tea. On a cafe menu you might see a hot or iced matcha latte, or even a matcha-flavoured cake or pastry. A quick google brings up <a href="https://www.foodandwine.com/tea/matcha-tea/matcha-recipes">countless recipes</a> incorporating matcha, both sweet and savoury.</p> <p>Retailers and cafe owners <a href="https://www.smh.com.au/goodfood/sydney-eating-out/global-matcha-shortage-hits-australia-as-skyrocketing-popularity-rivals-coffee-20241101-p5kn6v.html">have suggested</a> the main reasons for matcha’s popularity include its “instagrammable” looks and its purported health benefits.</p> <p>But what are the health benefits of matcha? Here’s what the evidence says.</p> <h2>First, what is matcha?</h2> <p><a href="https://www.mdpi.com/1420-3049/26/1/85">Matcha</a> is a finely ground powder of green tea leaves, which come from the plant <em>Camellia sinensis</em>. This is the same plant used to make green and black tea. However, the <a href="https://naokimatcha.com/blogs/articles/how-matcha-is-made-in-japan">production process</a> differentiates matcha from green and black tea.</p> <p>For matcha, the tea plant is grown in shade. Once the leaves are harvested, they’re steamed and dried and the stems are removed. Then the leaves are carefully ground at controlled temperatures to form the powder.</p> <p>The <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC6571865/">production process</a> for green tea is simpler. The leaves are picked from the unshaded plants, heated and then dried. We then steep the dried leaves in hot water to get tea (whereas with matcha the whole leaf is consumed).</p> <p>With black tea, after the leaves are picked they’re exposed to air, which leads to oxidation. This makes the leaves black and gives the tea a different flavour.</p> <h2>A source of phytonutrients</h2> <p>Phytonutrients are <a href="https://theconversation.com/phytonutrients-can-boost-your-health-here-are-4-and-where-to-find-them-including-in-your-next-cup-of-coffee-132100">chemical compounds found in plants</a> which have a range of benefits for human health. Matcha contains several.</p> <p>Chlorophyll gives plants such as <em>Camellia sinensis</em> their green colour. There’s some evidence chlorophyll may have <a href="https://www.mdpi.com/2223-7747/12/7/1533">health benefits</a> – including anti-inflammatory, anti-cancer and anti-obesity effects – due to its antioxidant properties. Antioxidants neutralise free radicals, which are unstable molecules that harm our cells.</p> <p>Theanine has been shown to <a href="https://www.mdpi.com/2504-3900/91/1/32">improve sleep</a> and <a href="https://link.springer.com/article/10.1007/s11130-019-00771-5?crsi=662497574&amp;cicada_org_src=healthwebmagazine.com&amp;cicada_org_mdm=direct">reduce stress and anxiety</a>. The only <a href="https://www.sciencedirect.com/topics/medicine-and-dentistry/theanine">other known</a> dietary source of theanine is mushrooms.</p> <p>Caffeine is a phytonutrient we know well. Aside from increasing alertness, caffeine has also demonstrated <a href="https://www.tandfonline.com/doi/full/10.1080/10408398.2022.2074362?casa_token=ADALIs6M3iAAAAAA%3AXpY35se0zLddAEIbZAaeCcDaNWm94s2WJaDHfXDRvVZgYq_xTxsCFuvtrtNXMXAL9uNIvLlYzO30aA#abstract">antioxidant effects</a> and some protection against a range of chronic and neurodegenerative diseases. However, too much caffeine can have negative side effects.</p> <p>Interestingly, shading the plants while growing appears to <a href="https://scijournals.onlinelibrary.wiley.com/doi/pdfdirect/10.1002/jsfa.9112?casa_token=KxVD9i9p4BsAAAAA:OwGTauXFHAndyJkam8WuXrmGQ2k1kaSRu5pOqJOrhSyRSeWkDwdrI23qaD5WVH1HGqZLFdsjP9ZTvolw">change the nutritional composition</a> of the leaf and may lead to higher levels of these phytonutrients in matcha compared to green tea.</p> <p>Another compound worth mentioning is called catechins, of which there are several different types. Matcha powder similarly has <a href="https://theconversation.com/matcha-tea-what-the-current-evidence-says-about-its-health-benefits-202782">more catechins</a> than green tea. They are strong antioxidants, which <a href="https://link.springer.com/article/10.1186/s41702-020-0057-8">have been shown</a> to have protective effects against bacteria, viruses, allergies, inflammation and cancer. Catechins <a href="https://www.sciencedirect.com/topics/medicine-and-dentistry/catechin#:%7E:text=Catechin%20is%20naturally%20present%20in,containing%20many%20catechins%20%5B130%2C131%5D.">are also found</a> in apples, blueberries and strawberries.</p> <h2>What are the actual health benefits?</h2> <p>So we know matcha contains a variety of phytonutrients, but does this translate to noticeable health benefits?</p> <p>A review published in 2023 identified only <a href="https://www.sciencedirect.com/science/article/pii/S2665927122002180">five experimental studies</a> that have given matcha to people. These studies gave participants about 2–4g of matcha per day (equivalent to 1–2 teaspoons of matcha powder), compared to a placebo, as either a capsule, in tea or in foods. Matcha decreased stress and anxiety, and improved memory and cognitive function. There was no effect on mood.</p> <p>A <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0309287">more recent study</a> showed 2g of matcha in older people aged 60 to 85 improved sleep quality. However, in <a href="https://www.mdpi.com/2072-6643/16/17/2907">younger people</a> aged 27 to 64 in another study, matcha had little effect on sleep.</p> <p>A <a href="https://link.springer.com/article/10.1007/s11130-022-00998-9">study in people with obesity</a> found no difference in the weight loss observed between the matcha group and the control group. This study did not randomise participants, and people knew which group they had been placed in.</p> <p>It could be hypothesised that given you consume all of the leaf, and given levels of some phytonutrients may be higher due to the growing conditions, matcha may have more nutritional benefits than green tea. But to my knowledge there has been no direct comparison of health outcomes from green tea compared to matcha.</p> <h2>There’s lots of evidence for green tea</h2> <p>While to date a limited number of studies have looked at matcha, and none compared matcha and green tea, there’s quite a bit of research on the health benefits of drinking green tea.</p> <p>A <a href="https://www.sciencedirect.com/science/article/pii/S0944711317300867?casa_token=dpbAEQQ7Is4AAAAA:U6aggqZM_G0KJ8hkhx0TGSvQywr4utlgKzwUnUj9x5t9eWd-FKENjbTvUv6s4TBTaPYrob-qQkk">systematic review of 21 studies</a> on green tea has shown similar benefits to matcha for improvements in memory, plus evidence for mood improvement.</p> <p>There’s also evidence green tea provides other health benefits. Systematic reviews have shown green tea leads to <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/ptr.6697?casa_token=1eAbmeGillYAAAAA%3ABNGBB6EuRFXIDWHgsa7E798wfC0MQK2r3yOmAlFzR2sxyD9Xt837VoCel0l6Tsh3RRO19t-YUm1GqO7Y">weight loss in people with obesity</a>, lower levels of <a href="https://link.springer.com/article/10.1186/s12937-020-00557-5">certain types of cholesterol</a>, and <a href="https://journals.lww.com/md-journal/fulltext/2020/02070/Effect_of_green_tea_supplementation_on_blood.36.aspx/1000">reduced blood pressure</a>. Green tea may also <a href="https://www.nature.com/articles/s41430-020-00710-7">lower the risk of certain types of cancer</a>.</p> <p>So, if you can’t get your hands on matcha at the moment, drinking green tea may be a good way to get your caffeine hit.</p> <p>Although the evidence on green tea provides us with some hints about the health benefits of matcha, we can’t be certain they would be the same. Nonetheless, if your local coffee shop has a good supply of matcha, there’s nothing to suggest you shouldn’t keep enjoying matcha drinks.</p> <p>However, it may be best to leave the matcha croissant or cronut for special occasions. When matcha is added to foods with high levels of added sugar, salt and saturated fat, any health benefits that could be attributed to the matcha may be negated.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/242775/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/evangeline-mantzioris-153250">Evangeline Mantzioris</a>, Program Director of Nutrition and Food Sciences, Accredited Practising Dietitian, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/matcha-is-having-a-moment-what-are-the-health-benefits-of-this-green-tea-drink-242775">original article</a>.</em></p> </div>

Food & Wine

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Don’t like drinking plain water? 10 healthy ideas for staying hydrated this summer

<div class="theconversation-article-body"> <p><em><a href="https://theconversation.com/profiles/lauren-ball-14718">Lauren Ball</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/emily-burch-438717">Emily Burch</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a></em></p> <p>Have you heard the saying “water is life?” Well, it’s true.</p> <p>Water is an <a href="https://www.hsph.harvard.edu/nutritionsource/water/">essential nutrient</a>. Our body cannot produce sufficient water to live, so we need to consume water through food and fluids to survive.</p> <p>Maintaining hydration is one of the most fundamental components of good health. But lots of people don’t like drinking plain water much. The good news is there are many other healthy ways to help you stay hydrated.</p> <h2>Why hydration is important</h2> <p>Water is vital for many aspects of body functioning. About half our blood is “blood plasma”, which is over 90% water. Blood plasma is essential for carrying energy, nutrients and oxygen to the cells in the body that need it most. Water helps to remove waste products via the kidneys. It also helps keep joints lubricated, the digestive system functioning, the body’s temperature controlled and skin plump and strong.</p> <p>If you don’t consume enough water, you may experience symptoms of dehydration such as headaches, dizziness, tiredness, low concentration, constipation and a dry mouth. Being severely dehydrated increases the risk of <a href="https://www.kidney.org/atoz/content/kidneystones">kidney stones</a> and <a href="https://www.healthdirect.gov.au/urinary-tract-infection-uti">urinary tract infections</a>.</p> <p>If you feel thirsty, it means your body is already <a href="https://my.clevelandclinic.org/health/treatments/9013-dehydration#:%7E:text=If%20you're%20thirsty%2C%20you,life%2Dthreatening%20illnesses%20like%20heatstroke.">mildly dehydrated</a>, so make sure you pay attention to what your body is telling you.</p> <h2>How much fluid do you need?</h2> <p>The amount of fluid we need changes as we age. Relative to our body weight, our needs decrease. So, a newborn baby has higher fluid needs (per kilogram body weight) than their parent, and older adults have lower fluid needs than younger adults.</p> <p>Fluid requirements are related to metabolic needs and vary from person-to-person. The normal turnover of water in adults is approximately 4% of total body weight per day. So, for example, if you weigh 70 kilograms, you’ll lose about 2.5 to 3 litres of water a day (not including sweating). This means you will need to consume that amount of water from food and drinks to maintain your hydration.</p> <p>Eight cups (or two litres) a day is often <a href="https://www.npr.org/2022/09/21/1124371309/busting-common-hydration-water-myths?utm_source=npr_newsletter&amp;utm_medium=email&amp;utm_content=20221016&amp;utm_term=7386723&amp;utm_campaign=health&amp;utm_id=31926817&amp;orgid=&amp;utm_att1=">mentioned</a> as the amount of water we should aim for and a nice way to track your intake. But it doesn’t account for individual variation based on age, gender, body size and activity levels.</p> <p>Alcohol is a diuretic, which means it dehydrates the body by promoting water loss through urine. This fluid loss is a key factor that contributes to the severity of a hangover. Always have a glass of water in between alcoholic drinks to help stay hydrated.</p> <p>Caffeinated drinks (like tea and coffee) only have a mild diuretic effect. For most healthy adults, it’s okay to consume up to 400 mg of caffeine a day – that’s about four cups of coffee or eight cups of tea. If you drink more than this, it may impact your hydration levels.</p> <p>To check your specific requirements, check out the Australian <a href="https://www.nrv.gov.au/nutrients/water">guidelines</a> for fluid intake.</p> <h2>People who should take extra care</h2> <p>Some people are at greater risk of the harmful health effects from dehydration and need to pay special attention to their fluid intake.</p> <p>The highest priority groups are babies, young kids, pregnant women, and older adults. These groups are at greater risk for many reasons, including relatively higher water needs per kilo of body weight, reduced ability to detect and respond to symptoms of dehydration, and barriers to consuming fluids regularly.</p> <p>Family and friends can play an important role in <a href="https://www.agedcareguide.com.au/information/hydration-for-elderly-people-and-the-dangers-of-dehydration">supporting loved ones</a> to maintain hydration, especially during warm weather.</p> <h2><strong>Ten ideas for keeping fluids up this summer</strong></h2> <ol> <li> <p><strong>Download a water reminder app on your phone</strong> This will help keep you on track during the day and give you digital “high fives” when you hit your water goals.</p> </li> <li> <p><strong>Add sugar-free flavouring</strong> Try a sugar-free fruit infusion in your water to make it more appealing. Prepare a jug in the refrigerator and infuse it overnight so it’s chilled for you the next day. Fill it up and take it everywhere with you!</p> </li> <li> <p><strong>Add some fresh fruit</strong> Add some slices of lime, lemon, berries, pineapple or orange to your water bottle for some natural flavouring. If the bottle is kept in a fridge, the fruit will stay fresh for about three days.</p> </li> <li> <p><strong>Make a jug of iced tea (not the bottled stuff)</strong> There are many great sugar-free recipes online. Tea contributes to fluid intake too. For green and black teas, brew in boiling water then cool overnight on the bench before refrigerating. Fruit teas can be made using cold water immediately.</p> </li> <li> <p><strong>Add a dash of cordial to your water</strong> A small amount of cordial in your water is a healthier alternative to drinking a sugar-sweetened soft drink or fruit juice. Diet cordials have less added sugar again.</p> </li> <li> <p><strong>Make a fruit ‘slushie’</strong> Combine fresh fruit, ice and water at home in the morning and sip to increase your fluid intake for the day.</p> </li> <li> <p><strong>Buy a soda maker for your home</strong> Some people find plain water tastes better with bubbles. Sparkling mineral water is great too, as long as there is no added sugar or sweeteners.</p> </li> <li> <p><strong>Before you eat anything, have a glass of water</strong> Make it a rule with yourself to have a glass of water before every snack or meal.</p> </li> <li> <p><strong>Eat water-rich fruits and vegetables</strong> Many fruits and vegetables have a high water content. Some of the best include berries, oranges, grapes, carrots, lettuce, cabbage, spinach and melons. Keep a container full of cut-up fruit to snack on in your fridge.</p> </li> <li> <p><strong>Use a water bottle</strong> Take it with you during the day and keep it by your bed overnight.</p> </li> </ol> <h2>A tip on water bottles</h2> <p>Water bottles are everywhere and sometimes seem to offer <a href="https://www.refinery29.com/en-au/emotional-support-water-bottle-girlies-tiktok-trend">emotional support</a> as well as hydration.</p> <p>Having a water bottle you enjoy using can go a long way in helping you keep up your fluids during the day.</p> <p>Pay attention to the material of the water bottle and use one that helps you form good habits. Some people prefer metal water bottles as they can keep water cooler for longer (others feel like they are camping). Some prefer glass bottles because the water isn’t affected by any flavours from the container (others fear breaking the glass).</p> <p>Consider the practical aspects, too: Will it fit in your bag? Will it be light enough to carry with you? Can you “chug” on it when you’re exceptionally thirsty? Does the lid require screwing? How durable is it in preventing leaks? Do some <a href="https://www.marthastewart.com/7842071/best-water-bottles-hydration">homework</a> on your water bottle, an essential accessory!<!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/lauren-ball-14718">Lauren Ball</a>, Professor of Community Health and Wellbeing, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/emily-burch-438717">Emily Burch</a>, Dietitian and Researcher, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/dont-like-drinking-plain-water-10-healthy-ideas-for-staying-hydrated-this-summer-191859">original article</a>.</em></p> </div>

Body

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Kyle Sandilands throws drink at Ben Fordham live on-air

<p>Kyle Sandilands and Ben Fordham have clashed during a live interview. </p> <p>The radio rivals joined John Laws' on his 2SM show on Wednesday, for one of Laws' final shows before he retires when things got heated. </p> <p>The trio had been chatting about various topics for 15 minutes when the conversation turned to the US election. </p> <p>After Sandilands gave his opinion on Trump's strong performance, Fordham sarcastically responded with:  “Of all the experts on American politics, what an honour for John Laws to have Kyle Sandilands commenting on it this morning.”</p> <p>The comment sparked an immediate reaction from the KIIS FM host, who retaliated with: “I’ll throw this water in your face, b***h." </p> <p>"I don’t care who you think you are.”</p> <p>“Well go on, do it!” Fordham challenged him.</p> <p>The 2GB host pushed him over the edge when he said:  “You talk tough to the paparazzi …” and was cut off when Sandilands threw a tall glass of water over his face and chest. </p> <p>“Oh my lord!” a shocked Fordham said.</p> <p>“There you go,” Sandilands told him. “Don’t push a Brisbane boy.”</p> <p>Laws seemed rather amused by the chaos, and as Fordham tried to dry himself off, he took another cheeky dig at Sandilands. </p> <p>“Kyle’s wet too, but that’s perspiration,” he said.</p> <p>The interview went on for another 15 minutes and towards the end of the chat Laws apologised to Fordham saying: “I’m sorry you’re wet." </p> <p>“I bet you’ve never said that before,” quipped Sandilands.</p> <p>To make matters worse for Fordham, the NSW premier, Chris Minns was waiting just outside the studio doors. </p> <p>“I’ve got all this water all over me, it looks like I’ve wet myself, and now I’m going to go outside and there are VIPs out there,” Fordham said.</p> <p>“Embarrassing.”</p> <p>On Thursday morning, the KIIS FM radio host reflected on the on-air clash, claiming that he was the one who invited Fordham to appear with him on Laws' radio show. </p> <p>“I shouldn’t have invited him, I’ll never invite him anywhere again,” he said.</p> <p>“He just carried on like a carnival person,” Sandilands continued. “He kept yelling and he kept interfering.”</p> <p>In response, Fordham reportedly told <em>news.com.au</em>, “Kyle knows he’s boring on his own. That’s why he roped me in to join him.”</p> <p><em>Images: 2SM/ news.com.au</em></p>

Music

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Readers response: How do you handle changes in energy levels as you age?

<p>As we get older, our levels of energy, ability and agility can slowly start to decrease, making us change our day-to-day lifestyles. </p> <p>We asked our readers how they handle these changes, and the response was overwhelming. Here's what they said. </p> <p><strong>Margo Courtney</strong> - Eat clean and healthy and your body will reward you with heaps of energy and vitality. I have a very big green smoothie most days as one of my 2 meals, along with 2 litres of water a day, and I don't even need much sleep.</p> <p><strong>Ron Stubbs</strong> - Up at 8am, can’t be late for my walk in the sun, and feeling great. Don’t need afternoon snooze then. I’m 77.</p> <p><strong>Kristeen Bon</strong> - I don’t handle them. I flop on the couch most afternoons for a quick five minute interior eye check!</p> <p><strong>Sylvia Brice</strong> - I have an autoimmune disease so my levels of energy are way down. I do what l can in small bursts and rest when l need to. Luckily l read and craft so can always do them. It's very hard to adapt but that's life and l am so much better for off than younger people with my disease. Think positive.</p> <p><strong>Judie Fisher</strong> - Do chores in small stretches, and have regular breaks.</p> <p><strong>Diane Green</strong> - Adjust. I do what I can, and what I can't just has to wait.</p> <p><strong>Raymond Richards</strong> - As they told us at the heart clinic, if you have something you HAVE to do - do it first.</p> <p><strong>Janis St George</strong> - Listen to your body - rest awhile when you need to.</p> <p><strong>Kaylene Samuels</strong> - Have a SCAN..... Seniors Compulsory Afternoon Nap.</p> <p><em>Image credits: Shutterstock </em></p>

Body

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Simon Baker charged with drink driving offences

<p><em>The Mentalist</em> star Simon Baker has been charged with two drink driving related offences. </p> <p>The 55-year-old is set to appear in Mullumbimby Local court next month in northern NSW, and he was charged with  “attempt to drive while under influence of alcohol – first offence” and “drive vehicle under influence of alcohol – first offence”.</p> <p>He was granted bail with no conditions. </p> <p>The Hollywood actor has been nominated for a TV Week Logie Award on Sunday night for his leading role in the Netflix adaptation  of Australian author Trent Dalton's <em>Boy Swallows Universe. </em></p> <p>The hit Netflix series has been nominated for 11 awards - the most of any other actor or show. </p> <p>The actor earned a star on the Hollywood Walk of Famefor his portrayal of Patrick Jane in <em>The Mentalist </em>between 2008 and 2015. </p> <p>He has also won multiple AACTA awards and been nominated for Emmy and Golden Globe awards. </p> <p>Baker's career began in Aussie soaps like <em>E Street, A Country Practice</em> and <em>Home and Away. </em></p> <p>He has also featured in movies including<em> LA Confidential, The Devil Wears Prada</em>, and earlier in his career featured in the original <em>Heartbreak High</em>.</p> <p>The actor split with his wife Rebecca Rigg in 2021 following 23 years of marriage, and the pair have three children and own a property together in Nashua, near Byron Bay. </p> <p><em>Images: Jean Cummings/THA/ Shutterstock editorial</em></p>

Legal

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Cheeky diet soft drink getting you through the work day? Here’s what that may mean for your health

<div class="theconversation-article-body"> <p><em><a href="https://theconversation.com/profiles/lauren-ball-14718">Lauren Ball</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/emily-burch-438717">Emily Burch</a>, <a href="https://theconversation.com/institutions/southern-cross-university-1160">Southern Cross University</a></em></p> <p>Many people are <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7230225/">drinking less</a> sugary soft drink than in the past. This is a great win for public health, given the <a href="https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2749350">recognised risks</a> of diets high in sugar-sweetened drinks.</p> <p>But over time, intake of diet soft drinks has <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7230225/">grown</a>. In fact, it’s so high that these products are now regularly <a href="https://www.sciencedirect.com/science/article/pii/S0160412020319188">detected in wastewater</a>.</p> <p>So what does the research say about how your health is affected in the long term if you drink them often?</p> <h2>What makes diet soft drinks sweet?</h2> <p>The World Health Organization (WHO) <a href="https://www.who.int/news/item/04-03-2015-who-calls-on-countries-to-reduce-sugars-intake-among-adults-and-children">advises</a> people “reduce their daily intake of free sugars to less than 10% of their total energy intake. A further reduction to below 5% or roughly 25 grams (six teaspoons) per day would provide additional health benefits.”</p> <p>But most regular soft drinks contain <a href="https://www.actiononsugar.org/surveys/2014/sugar-sweetened-beverages/">a lot of sugar</a>. A regular 335 millilitre can of original Coca-Cola contains at least <a href="https://www.coca-cola.com/ng/en/about-us/faq/how-much-sugar-is-in-cocacola-original-taste">seven</a> teaspoons of added sugar.</p> <p>Diet soft drinks are designed to taste similar to regular soft drinks but without the sugar. Instead of sugar, diet soft drinks contain artificial or natural sweeteners. The artificial sweeteners include aspartame, saccharin and sucralose. The natural sweeteners include stevia and monk fruit extract, which come from plant sources.</p> <p>Many artificial sweeteners are much sweeter than sugar so less is needed to provide the same burst of sweetness.</p> <p>Diet soft drinks are marketed as healthier alternatives to regular soft drinks, particularly for people who want to reduce their sugar intake or manage their weight.</p> <p>But while surveys of Australian <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7551593/">adults</a> and <a href="https://www.cambridge.org/core/journals/public-health-nutrition/article/adolescents-knowledge-and-beliefs-regarding-health-risks-of-soda-and-diet-soda-consumption/32F3E0FD6727F18F04C63F0390595131">adolescents</a> show most people understand the benefits of reducing their sugar intake, they often aren’t as aware about how diet drinks may affect health more broadly.</p> <h2>What does the research say about aspartame?</h2> <p>The artificial sweeteners in soft drinks are considered safe for consumption by food authorities, including in the <a href="https://www.fda.gov/food/food-additives-petitions/aspartame-and-other-sweeteners-food">US</a> and <a href="https://www.foodstandards.gov.au/consumer/additives/aspartame">Australia</a>. However, some <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4899993/">researchers</a> have raised concern about the long-term risks of consumption.</p> <p>People who drink diet soft drinks regularly and often are <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4446768/">more likely</a> to develop certain metabolic conditions (such as diabetes and heart disease) than those who don’t drink diet soft drinks.</p> <p>The link was found even after accounting for other dietary and lifestyle factors (such as physical activity).</p> <p>In 2023, the WHO announced reports had found aspartame – the main sweetener used in diet soft drinks – was “<a href="https://www.who.int/news/item/14-07-2023-aspartame-hazard-and-risk-assessment-results-released">possibly carcinogenic to humans</a>” (carcinogenic means cancer-causing).</p> <p>Importantly though, the report noted there is not enough current scientific evidence to be truly confident aspartame may increase the risk of cancer and emphasised it’s safe to consume occasionally.</p> <h2>Will diet soft drinks help manage weight?</h2> <p>Despite the word “diet” in the name, diet soft drinks are not strongly linked with weight management.</p> <p>In 2022, the WHO conducted a <a href="https://www.who.int/news/item/15-05-2023-who-advises-not-to-use-non-sugar-sweeteners-for-weight-control-in-newly-released-guideline">systematic review</a> (where researchers look at all available evidence on a topic) on whether the use of artificial sweeteners is beneficial for weight management.</p> <p>Overall, the randomised controlled trials they looked at suggested slightly more weight loss in people who used artificial sweeteners.</p> <p>But the observational studies (where no intervention occurs and participants are monitored over time) found people who consume high amounts of artificial sweeteners tended to have an increased risk of higher body mass index and a 76% increased likelihood of having obesity.</p> <p>In other words, artificial sweeteners may not directly help manage weight over the long term. This resulted in the WHO <a href="https://www.who.int/news/item/15-05-2023-who-advises-not-to-use-non-sugar-sweeteners-for-weight-control-in-newly-released-guideline">advising</a> artificial sweeteners should not be used to manage weight.</p> <p><a href="http://www.cell.com/cell-metabolism/fulltext/S1550-4131(16)30296-0">Studies</a> in animals have suggested consuming high levels of artificial sweeteners can signal to the brain it is being starved of fuel, which can lead to more eating. However, the evidence for this happening in humans is still unproven.</p> <h2>What about inflammation and dental issues?</h2> <p>There is <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10817473/">some early evidence</a> artificial sweeteners may irritate the lining of the digestive system, causing inflammation and increasing the likelihood of diarrhoea, constipation, bloating and other symptoms often associated with irritable bowel syndrome. However, this study noted more research is needed.</p> <p>High amounts of diet soft drinks have <a href="https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-023-17223-0">also been</a> linked with liver disease, which is based on inflammation.</p> <p>The consumption of diet soft drinks is also <a href="https://link.springer.com/article/10.1007/s40368-019-00458-0#:%7E:text=Diet%20soft%20drinks%20often%20have,2006">associated</a> with dental erosion.</p> <p>Many soft drinks contain phosphoric and citric acid, which can damage your tooth enamel and contribute to dental erosion.</p> <h2>Moderation is key</h2> <p>As with many aspects of nutrition, moderation is key with diet soft drinks.</p> <p>Drinking diet soft drinks occasionally is unlikely to harm your health, but frequent or excessive intake may increase health risks in the longer term.</p> <p>Plain water, infused water, sparkling water, herbal teas or milks remain the best options for hydration.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/233438/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/lauren-ball-14718">Lauren Ball</a>, Professor of Community Health and Wellbeing, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/emily-burch-438717">Emily Burch</a>, Accredited Practising Dietitian and Lecturer, <a href="https://theconversation.com/institutions/southern-cross-university-1160">Southern Cross University</a></em></p> <p><em>Image credits: Shutterstock</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/cheeky-diet-soft-drink-getting-you-through-the-work-day-heres-what-that-may-mean-for-your-health-233438">original article</a>.</em></p> </div>

Food & Wine

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Walking or running: for the same distance, which consumes more energy?

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/clement-lemineur-1529211">Clément Lemineur</a>, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a>; <a href="https://theconversation.com/profiles/clement-naveilhan-1495411">Clément Naveilhan</a>, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a>, and <a href="https://theconversation.com/profiles/francois-dernoncourt-1495410">François Dernoncourt</a>, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a></em></p> <p>It’s Monday morning, the alarm goes off and it’s already 7:30 a.m. – and you’re 30 minutes late. Normally you need 45 minutes to walk the 3 kilometres to work, but this morning you’ll be running for 20 minutes. Yes, but by lunchtime you’re feeling more tired and you have the impression that you’ve expended more energy than usual on the trip. Yet you’ve covered the same distance as on the other days. How can this be?</p> <p>The calorie expenditure associated with any activity is called the “metabolic cost”, and corresponds to the energy consumed by our organs to cover a given distance. This metabolic cost can be determined by analysing the oxygen our bodies consume and the carbon dioxide they produce, we can estimate the amount of energy expended, and thus the metabolic cost. It was using this method that <a href="https://pubmed.ncbi.nlm.nih.gov/692303/">researchers had already answered our question back in the 1970s</a>.</p> <p>Perhaps not surprisingly, running consumes more energy than walking for the same distance covered. But why?</p> <h2>Energy lost when running</h2> <p>Imagine you’re watching someone running. Now look closely at the vertical movement (up and down) of their pelvis and head. As you can see from the diagram below, when we run, the distance that our body moves up and down is greater than when we walk. To produce this vertical movement, the muscles of the lower limbs have to generate more force, and that consumes more energy, yet doesn’t bring us any closer to our destination. So when running, part of the energy expended is used to move our bodies <a href="https://pubmed.ncbi.nlm.nih.gov/16029949/">upward rather than forward</a>. The energy needed to cover those 3 km is therefore higher for running than for walking.</p> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=287&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=287&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=287&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=361&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=361&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=361&amp;fit=crop&amp;dpr=3 2262w" alt="Illustration of the oscillations of running and walking" /></a><figcaption><span class="caption">Running involves much greater vertical oscillation of the centre of mass than walking. This is the main reason why running consumes more energy than walking for the same distance covered.</span> <span class="attribution"><span class="source">François Dernoncourt</span>, <span class="license">Fourni par l'auteur</span></span></figcaption></figure> <p>This difference between walking and running is not confined to what happens during the activity itself. In fact, each physical exercise causes a delayed expenditure of energy, which is added to the expenditure during the activity.</p> <p>Taking this into account, it’s once again running that uses more energy than walking. Immediately after running your 3 km, the increased energy consumption (compared with resting) lasts for several minutes, mainly because of the increase in body temperature and the replenishment of energy reserves. This additional expenditure after running is <a href="https://pubmed.ncbi.nlm.nih.gov/22446673/">more than twice that observed after walking</a>, due to the difference in intensity between the two exercises.</p> <h2>It all depends on speed</h2> <p>Running therefore involves a higher calorie expenditure than walking for the same distance covered. But this is on condition that the walking speed considered is “normal” (around 5 km/h). So, if we walk very slowly, it will take us so long to cover the 3 km that the calorie expenditure will be greater in the end. This is because the body expends a certain amount of energy per unit of time no matter what, regardless of the activity performed (known as the “basal metabolic rate”).</p> <p>The same applies if the walking speed is very fast (<a href="https://pubmed.ncbi.nlm.nih.gov/29925582/">more than 8 km/h</a>): running is more energy-efficient. Here, the coordination required to walk at such a speed means that we need to activate our muscles more, without being able to take advantage of the elasticity of our tendons, as is the case with running.</p> <p>Moreover, we have a very precise intuitive perception of the energy efficiency of a particular style of movement. If we’re on a treadmill whose speed gradually increases, the point at which we spontaneously switch from walking to running coincides with the <a href="https://www.sciencedirect.com/science/article/pii/S096663622100120X">moment when it would become more energy-consuming to walk than to run</a>.</p> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=395&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=395&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=395&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=497&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=497&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=497&amp;fit=crop&amp;dpr=3 2262w" alt="" /></a><figcaption><span class="caption">Modelling of metabolic cost (kilocalories expended per kilogram per kilometre covered) as a function of speed (kilometres per hour) for walking and running. The curves cross at a certain speed (purple line; around 8 km/h): this means that above this speed, walking becomes more energy-intensive than running. It’s at around this threshold speed that people spontaneously switch from walking to running.</span> <span class="attribution"><span class="source">François Dernoncourt, Adapted from Summerside et al</span>, <span class="license">Fourni par l'auteur</span></span></figcaption></figure> <p>In conclusion, because of greater oscillation of the centre of mass and increased energy expenditure after exercise, running to work is more energy-intensive than covering the same distance by walking. But remember, whether you choose to walk or run to work, the most important thing is that you’re already saving energy!<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/233943/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/clement-lemineur-1529211">Clément Lemineur</a>, Doctorant en Sciences du Mouvement Humain, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a>; <a href="https://theconversation.com/profiles/clement-naveilhan-1495411">Clément Naveilhan</a>, Doctorant en Sciences du Mouvement Humain, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a>, and <a href="https://theconversation.com/profiles/francois-dernoncourt-1495410">François Dernoncourt</a>, Doctorant en Sciences du Mouvement Humain, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/walking-or-running-for-the-same-distance-which-consumes-more-energy-233943">original article</a>.</em></p> </div>

Body

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Can you drink your fruit and vegetables? How does juice compare to the whole food?

<div class="theconversation-article-body"> <p><em><a href="https://theconversation.com/profiles/emma-beckett-22673">Emma Beckett</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a></em></p> <p>Do you struggle to eat your fruits and vegetables? You are not alone. Less than 5% of Australians eat the recommended serves of fresh produce <a href="https://www.abs.gov.au/statistics/health/health-conditions-and-risks/dietary-behaviour/latest-release">each day</a> (with 44% eating enough fruit but only 6% eating the recommended vegetables).</p> <p>Adults <a href="https://www.eatforhealth.gov.au/food-essentials/five-food-groups">should aim to eat</a> at least five serves of vegetables (or roughly 375 grams) and two serves of fruit (about 300 grams) each day. Fruits and vegetables help keep us healthy because they have lots of nutrients (vitamins, minerals and fibre) and health-promoting bioactive compounds (substances not technically essential but which have health benefits) without having many calories.</p> <p>So, if you are having trouble <a href="https://theconversation.com/want-your-child-to-eat-more-veggies-talk-to-them-about-eating-the-rainbow-195563">eating the rainbow</a>, you might be wondering – is it OK to drink your fruits and vegetables instead in a juice or smoothie? Like everything in nutrition, the answer is all about context.</p> <h2>It might help overcome barriers</h2> <p>Common reasons for not eating enough fruits and vegetables are <a href="https://onlinelibrary.wiley.com/doi/abs/10.1111/1747-0080.12735">preferences, habits, perishability, cost, availability, time and poor cooking skills</a>. Drinking your fruits and vegetables in juices or smoothies can help overcome some of these barriers.</p> <p><a href="https://onlinelibrary.wiley.com/doi/full/10.1111/j.1467-3010.2009.01760.x">Juicing or blending</a> can help disguise tastes you don’t like, like bitterness in vegetables. And it can blitz imperfections such as bruises or soft spots. Preparation doesn’t take much skill or time, particularly if you just have to pour store-bought juice from the bottle. Treating for food safety and shipping time does change the make up of juices slightly, but unsweetened juices still remain significant sources of <a href="https://pubmed.ncbi.nlm.nih.gov/12403253/">nutrients</a> and <a href="https://www.emerald.com/insight/content/doi/10.1108/00070701111140089/full/html?fullSc=1">beneficial bioactives</a>.</p> <p>Juicing can <a href="https://academic.oup.com/nutritionreviews/advance-article-pdf/doi/10.1093/nutrit/nuz031/30096176/nuz031.pdf">extend shelf life</a> and reduce the cost of nutrients. In fact, when researchers looked at the density of nutrients relative to the costs of common foods, <a href="https://www.mdpi.com/1660-4601/18/11/5771">fruit juice was the top performer</a>.</p> <h2>So, drinking my fruits and veggies counts as a serve, right?</h2> <p>How juice is positioned in healthy eating recommendations is a bit confusing. The <a href="https://www.eatforhealth.gov.au/food-essentials/five-food-groups/fruit">Australian Dietary Guidelines</a> include 100% fruit juice with fruit but vegetable juice isn’t mentioned. This is likely because vegetable juices weren’t as common in 2013 when the guidelines were last revised.</p> <p><a href="https://www.eatforhealth.gov.au/food-essentials/five-food-groups/fruit">The guidelines</a> also warn against having juice too often or in too high amounts. This appears to be based on the logic that juice is similar, but not quite as good as, whole fruit. Juice has lower levels of fibre compared to fruits, with fibre important for gut health, heart health and promoting feelings of fullness. Juice and smoothies also release the sugar from the fruit’s other structures, making them “free”. The <a href="https://www.who.int/publications-detail-redirect/9789241549028">World Health Organization recommends</a> we limit free sugars for good health.</p> <p>But fruit and vegetables are more than just the sum of their parts. When we take a “<a href="https://hal.science/hal-01630639/">reductionist</a>” approach to nutrition, foods and drinks are judged based on assumptions made about limited features such as sugar content or specific vitamins.</p> <p>But these features might not have the impact we logically assume because of the complexity of foods and people. When humans eat varied and complex diets, we don’t necessarily need to be concerned that some foods are lower in fibre than others. Juice can retain the nutrients and bioactive compounds of fruit and vegetables and even add more because parts of the fruit we don’t normally eat, like the skin, can be included.</p> <h2>So, it is healthy then?</h2> <p>A recent <a href="https://academic.oup.com/nutritionreviews/advance-article/doi/10.1093/nutrit/nuae036/7659479?login=false">umbrella review of meta-analyses</a> (<a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8977198/">a type of research</a> that combines data from multiple studies of multiple outcomes into one paper looked at the relationship between 100% juice and a range of health outcomes.</p> <p>Most of the evidence showed juice had a neutral impact on health (meaning no impact) or a positive one. Pure 100% juice was linked to improved heart health and inflammatory markers and wasn’t clearly linked to weight gain, multiple cancer types or metabolic markers (such as blood sugar levels).</p> <p>Some health risks linked to drinking juice were <a href="https://academic.oup.com/nutritionreviews/advance-article/doi/10.1093/nutrit/nuae036/7659479?login=false">reported</a>: death from heart disease, prostate cancer and diabetes risk. But the risks were all reported in <a href="https://www.cancer.gov/research/participate/what-are-observational-studies#:%7E:text=Observational%20studies%20are%20research%20studies,over%20a%20period%20of%20time.">observational studies</a>, where researchers look at data from groups of people collected over time. These are not controlled and do not record consumption in the moment. So other drinks people think of as 100% fruit juice (such as sugar-sweetened juices or cordials) might accidentally be counted as 100% fruit juice. These types of studies are not good at showing the direct causes of illness or death.</p> <h2>What about my teeth?</h2> <p>The common belief juice damages teeth might not stack up. Studies that show juice damages teeth often <a href="https://www.frontiersin.org/articles/10.3389/fpubh.2019.00190/full">lump 100% juice in with sweetened drinks</a>. Or they use model systems like fake mouths that <a href="https://www.frontiersin.org/articles/10.3389/fpubh.2019.00190/full">don’t match</a> how people drinks juice in real life. Some <a href="https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2019.00190/full">use extreme scenarios</a> like sipping on large volumes of drink frequently over long periods of time.</p> <p>Juice is acidic and does contain sugars, but it is possible proper oral hygiene, including <a href="https://www.sciencedirect.com/science/article/abs/pii/S0300571207000152?via%3Dihub">rinsing, cleaning</a> and using straws can mitigate these risks.</p> <p>Again, reducing juice to its acid level misses the rest of the story, including the nutrients and bioactives contained in juice that are <a href="https://www.sciencedirect.com/science/article/pii/S2352385919300210#:%7E:text=Research%20has%20also%20confirmed%20that,prevention%20of%20oral%20inflammatory%20disorders.">beneficial to oral health</a>.</p> <h2>So, what should I do?</h2> <p>Comparing whole fruit (a food) to juice (a drink) can be problematic. They serve different culinary purposes, so aren’t really interchangeable.</p> <p>The Australian Guide to Healthy Eating recommends <a href="https://www.eatforhealth.gov.au/guidelines/australian-guide-healthy-eating">water as the preferred beverage</a> but this assumes you are getting all your essential nutrients from eating.</p> <p>Where juice fits in your diet depends on what you are eating and what other drinks it is replacing. Juice might replace water in the context of a “perfect” diet. Or juice might replace <a href="https://www.cambridge.org/core/journals/public-health-nutrition/article/substitution-of-pure-fruit-juice-for-fruit-and-sugarsweetened-beverages-and-cardiometabolic-risk-in-epicnl-a-prospective-cohort-study/B7314F1198109712DE0F2E44D919A6A7">alcohol or sugary soft drinks</a> and make the relative benefits look very different.</p> <h2>On balance</h2> <p>Whether you want to eat your fruits and vegetables or drink them comes down to what works for you, how it fits into the context of your diet and your life.</p> <p>Smoothies and juices aren’t a silver bullet, and there is no evidence they work as a “cleanse” or <a href="https://theconversation.com/lemon-water-wont-detox-or-energise-you-but-it-may-affect-your-body-in-other-ways-180035">detox</a>. But, with society’s low levels of fruit and vegetable eating, having the option to access nutrients and bioactives in a cheap, easy and tasty way shouldn’t be discouraged either.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/205222/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/emma-beckett-22673">Emma Beckett</a>, Adjunct Senior Lecturer, Nutrition, Dietetics &amp; Food Innovation - School of Health Sciences, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/can-you-drink-your-fruit-and-vegetables-how-does-juice-compare-to-the-whole-food-205222">original article</a>.</em></p> </div>

Food & Wine

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How would a switch to nuclear affect electricity prices for households and industry?

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/roger-dargaville-1832">Roger Dargaville</a>, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a></em></p> <p>Peter Dutton has announced that under a Coalition government, seven nuclear power stations would be built around the country over the next 15 years.</p> <p>Experts have declared nuclear power would be <a href="https://www.abc.net.au/news/2024-06-20/power-prices-wont-fall-with-nuclear/103998172">expensive</a> and <a href="https://www.afr.com/politics/federal/nuclear-to-cost-17b-and-take-until-2040-to-build-csiro-20240521-p5jfaj#:%7E:text=Nuclear%20could%20cost%20up%20to,until%202040%20to%20build%3A%20CSIRO&amp;text=Peter%20Dutton's%20nuclear%20energy%20plans,operational%20until%20at%20least%202040.">slow to build</a>.</p> <p>But what might happen to energy prices if the Coalition were to win government and implement this plan?</p> <h2>How might we estimate the cost of nuclear?</h2> <p>By 2035, 50–60% of the existing coal-fired fleet will very likely <a href="https://aemo.com.au/-/media/files/stakeholder_consultation/consultations/nem-consultations/2023/draft-2024-isp-consultation/draft-2024-isp.pdf">have been retired</a>, including Vales Point B, Gladstone, Yallourn, Bayswater and Eraring – all of which will have passed 50 years old.</p> <p>These five generators contribute just over 10 gigawatts of capacity. It’s probably not a coincidence that the seven nuclear plants proposed by Dutton would also contribute roughly 10 gigawatts in total if built.</p> <p>Neither my team at Monash University nor the Australian Energy Market Operator has run modelling scenarios to delve into the details of what might happen to electricity prices under a high-uptake nuclear scenario such as the one proposed by the Coalition. That said, we can make some broad assumptions based on a metric known as the “levelised cost of electricity”.</p> <p>This value takes into account:</p> <ul> <li> <p>how much it costs to build a particular technology</p> </li> <li> <p>how long it takes to build</p> </li> <li> <p>the cost to operate the plant</p> </li> <li> <p>its lifetime</p> </li> <li> <p>and very importantly, its capacity factor.</p> </li> </ul> <p>Capacity factor is how much electricity a technology produces in real life, compared with its theoretical maximum output.</p> <p>For example, a nuclear power station would likely run at 90–95% of its full capacity. A solar farm, on the other hand, will run at just 20–25% of its maximum, primarily because it’s night for half of the time, and cloudy some of the time.</p> <p>CSIRO recently published its <a href="https://www.csiro.au/en/research/technology-space/energy/gencost">GenCost</a> report, which outlines the current and projected build and operational costs for a range of energy technologies.</p> <p>It reports that large-scale nuclear generated electricity would cost between A$155 and $252 per megawatt-hour, falling to between $136 and $226 per megawatt-hour by 2040.</p> <p>The report bases these costs on recent projects in South Korea, but doesn’t consider some other cases where costs have blown out dramatically.</p> <p>The most obvious case is that of <a href="https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/hinkley-point-c-update-1">Hinkley Point C nuclear plant</a> in the United Kingdom. This <a href="https://www.reuters.com/business/energy/edfs-nuclear-project-britain-pushed-back-2029-may-cost-up-34-bln-2024-01-23/">3.2GW</a> plant, which is being built by French company EDF, was recently <a href="https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/hinkley-point-c-update-1">reported</a> to be now costing around £34 billion (about A$65 billion). That’s about A$20,000 per kilowatt.</p> <p>CSIRO’s GenCost report assumed a value of $8,655 per kilowatt for nuclear, so the true levelised cost of electricity of nuclear power in Australia may end up being twice as expensive as CSIRO has calculated.</p> <hr /> <p><iframe id="Aryx7" class="tc-infographic-datawrapper" style="border: none;" src="https://datawrapper.dwcdn.net/Aryx7/4/" width="100%" height="400px" frameborder="0"></iframe></p> <hr /> <h2>Other factors play a role, too</h2> <p>Another factor not accounted for in the GenCost assumptions is that Australia does not have a nuclear industry. Virtually all the niche expertise would need to be imported.</p> <p>And very large infrastructure projects have a nasty habit of <a href="https://www.cis.org.au/publication/bungles-blowouts-and-boondoggles-why-australias-infrastructure-projects-cost-more-than-they-should/">blowing out in cost</a> – think of Snowy 2.0, Sydney’s light rail project, and the West Gate Tunnel in Victoria.</p> <p>Reasons include higher local wages, regulations and standards plus aversion from lenders to risk that increases cost of capital. These factors would not bode well for nuclear.</p> <p>In CSIRO’s GenCost report, the levelised cost of electricity produced from coal is $100–200 per megawatt-hour, and for gas it’s $120–160 per megawatt-hour. Solar and wind energy work out to be approximately $60 and $90 per megawatt-hour, respectively. But it’s not a fair comparison, as wind and solar are not “dispatchable” but are dependent on the availability of the resource.</p> <p>When you combine the cost of a mix of wind and solar energy and storage, along with the cost of getting the renewable energy into the grid, renewables end up costing $100–120 per megawatt-hour, similar to coal.</p> <p>If we were to have a nuclear-based system (supplemented by gas to meet the higher demands in the mornings and evenings), the costs would likely be much higher – potentially as much as three to four times if cost blowouts similar to Hinkley Point C were to occur (assuming costs were passed on to electricity consumers. Otherwise, taxpayers in general would bear the burden. Either way, it’s more or less the same people).</p> <h2>But what about the impact on your household energy bill?</h2> <p>Well, here the news is marginally better.</p> <p>Typical retail tariffs are 25-30 cents per kilowatt-hour, which is $250–300 per megawatt-hour. The largest component of your energy bill is not the cost of generation of the electricity; rather, it’s the cost of getting the power from the power stations to your home or business.</p> <p>In very approximate terms, this is made up of the market average costs of generation, transmission and distribution, as well as retailer margin and other minor costs.</p> <p>The transmission and distribution costs will not be significantly different under the nuclear scenario compared with the current system. And the additional transmission costs associated with the more distributed nature of renewables (meaning these renewable projects are all over the country) is included in the estimate.</p> <p>According to my back-of-the-envelope calculations, your retail tariff under the nuclear scenario could be 40–50c per kilowatt-hour.</p> <p>But if you are a large energy consumer such as an aluminium smelter, you pay considerably less per kilowatt-hour as you don’t incur the same network or retailer costs (but the cost of generating electricity in the first place makes up a much bigger proportion of the total cost).</p> <p>So if the cost of electricity generation soars, this hypothetical aluminium smelter’s energy costs will soar too.</p> <p>This would be a severe cost burden on Australian industry that has traditionally relied on cheap electricity (although it’s been a while since electricity could be described as cheap).</p> <h2>A likely increase in energy costs</h2> <p>In summary, in a free market, it is very unlikely nuclear could be competitive.</p> <p>But if a future Coalition government were to bring nuclear into the mix, energy costs for residential and especially industrial customers would very likely increase.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/232913/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/roger-dargaville-1832">Roger Dargaville</a>, Director Monash Energy Institute, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/how-would-a-switch-to-nuclear-affect-electricity-prices-for-households-and-industry-232913">original article</a>.</em></p> </div>

Money & Banking

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How to sign up for energy bill relief

<p>In the face of rising living costs, thousands of Australians have turned to their energy providers for financial assistance, highlighting the community spirit and support available during these challenging times. Energy companies like AGL Australia and Energy Australia are stepping up to help their customers manage their bills and find relief.</p> <p>AGL Australia has seen a significant increase in its financial hardship program, with 10,000 customers joining in the past year. Energy Australia receives 1,000 calls every weekday from customers seeking bill relief. These numbers reflect the proactive measures Australians are taking to manage their expenses and the readiness of energy providers to offer support.</p> <p>Crystal Noronha, who has worked at the AGL call centre for 11 years, has witnessed firsthand the growing need for assistance. "There's a lot of distress in their voice, there's anxiety," Noronha <a href="https://www.9news.com.au/national/thousands-of-customers-signing-up-for-energy-bill-relief-with-millions-more-eligible/9dc9535b-f94b-42f4-aeaf-6534dc898df2" target="_blank" rel="noopener">shared with 9NEWS</a>. "Some hide away from sharing their difficulties, but we're here to help them."</p> <p>Customers need not face extreme financial hardship to seek help, as everyone is eligible for some form of assistance.</p> <p>Gavin Dufty, from the charity St Vincent De Paul, underscores the commitment of energy companies to support their customers. "Every energy company has a legal obligation to provide support for all households regardless," Dufty explains. The assistance offered varies based on the provider and individual circumstances, ranging from bill extensions and more manageable payment plans to, in some cases, complete debt waivers.</p> <p>Adding to this support, the federal government is taking significant steps to ease the burden on households. Starting July 1, every household will receive a $300 credit into their energy account, providing substantial relief. Additionally, a free government website is available for customers to compare energy plan prices and find the most cost-effective options.</p> <p>These measures reflect a collaborative effort between energy providers and the government to ensure Australians can navigate the financial challenges of today's world. By offering practical solutions and financial relief, they are making a positive impact on the lives of many, ensuring that no one is left to face these difficulties alone.</p> <p><em>Image: Getty</em></p>

Money & Banking

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Weight loss: drinking a gallon of water a day probably won’t help you lose weight

<div class="theconversation-article-body"> <p><em><a href="https://theconversation.com/profiles/duane-mellor-136502">Duane Mellor</a>, <a href="https://theconversation.com/institutions/aston-university-1107">Aston University</a></em></p> <p>It’s often claimed that if you’re trying to lose weight, one of the things you should do each day is drink plenty of water – with some internet advice even suggesting this should be as much as a gallon (about 4.5 litres). The claim is that water helps burn calories and reduce appetite, which in turn leads to weight loss.</p> <p>But while we all might wish it was this easy to lose weight, unfortunately there’s little evidence to back up these claims.</p> <h2>Myth 1: water helps burn calories</h2> <p>One <a href="https://pubmed.ncbi.nlm.nih.gov/14671205/">small study</a>, of 14 young adults, found drinking 500ml of water increased resting energy expenditure (the amount of calories our body burns before exercise) by about 24%.</p> <p>While this may sound great, this effect only lasted an hour. And this wouldn’t translate to a big difference at all. For an average 70kg adult, they would only use an additional 20 calories – a quarter of a biscuit – for every 500ml of water they drank.</p> <p><a href="https://pubmed.ncbi.nlm.nih.gov/16822824/">Another study</a> of eight young adults only saw an increase in energy expenditure when the water was fridge cold – reporting a very modest 4% increase in calories burned. This may be because the body needs to use more energy in order to bring the water up to body temperature, or because it requires more energy for the body to filter the increased volume of fluid through the kidneys. And again, this effect was only seen for about an hour.</p> <p>So although scientifically it might be possible, the actual net increase in calories burned is tiny. For example, even if you drank an extra 1.5l of water per day, it would save fewer calories than you’d get in a slice of bread.</p> <p>It’s also worth noting that all this research was in young healthy adults. More research is needed to see whether this effect is also seen in other groups (such as middle-aged and older adults).</p> <h2>Myth 2: water with meals reduces appetite</h2> <p>This claim again seems sensible, in that if your stomach is at least partly full of water there’s less room for food – so you end up eating less.</p> <p>A number of studies actually support this, particularly those conducted in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2859815/#:%7E:text=Thus%2C%20when%20combined%20with%20a,meal%20EI%20following%20water%20ingestion.">middle-aged and older adults</a>. It’s also a reason people who are unwell or have a poor appetite are advised <a href="https://www.ageuk.org.uk/bp-assets/globalassets/salford/forms/improve-your-food-and-drink-intake.pdf">not to drink before eating</a> as it may lead to under-eating.</p> <p>But for people looking to lose weight, the science is a little less straightforward.</p> <p><a href="https://pubmed.ncbi.nlm.nih.gov/17228036/">One study</a> showed middle-aged and older adults lost 2kg over a 12-week period when they drank water before meals compared with people who didn’t drink any water with their meal. Younger participants (aged 21-35) on the other hand did not lose any weight, regardless of whether they drank water before their meal or not.</p> <p>But since the study didn’t use blinding (where information which may influence participants is withheld until after the experiment is finished), it means that participants may have become aware of why they were drinking water before their meal. This may have led some participants to purposefully change how much they ate in the hopes it might increase their changes of losing weight. However, this doesn’t explain why the effect wasn’t seen in young adults, so it will be important for future studies to investigate why this is.</p> <p>The other challenge with a lot of this kind of research is that it only focuses on whether participants eat less during just one of their day’s meals after drinking water. Although this might suggest the potential to lose weight, there’s <a href="https://pubmed.ncbi.nlm.nih.gov/20736036/">very little good-quality evidence</a> showing that reducing appetite in general leads to weight loss over time.</p> <p>Perhaps this is due to our body’s biological drive to <a href="https://pubmed.ncbi.nlm.nih.gov/28193517/">maintain its size</a>. It’s for this reason that no claims can be legally made in Europe about foods which help make you <a href="https://www.cambridge.org/core/journals/proceedings-of-the-nutrition-society/article/satietyenhancing-products-for-appetite-control-science-and-regulation-of-functional-foods-for-weight-management/E4CCAE4C90A220994FD29C27FAE7F666">feel fuller for longer</a> with <a href="https://www.gov.uk/government/publications/nutrition-and-health-claims-guidance-to-compliance-with-regulation-ec-1924-2006-on-nutrition-and-health-claims-made-on-foods/nutrition-and-health-claims-guidance-to-compliance-with-regulation-ec-19242006#section-6">reference to weight loss</a>.</p> <p>So, although there might be some appetite-dulling effects of water, it seems that it might not result in long-term weight change – and may possibly be due to making conscious changes to your diet.</p> <h2>Just water isn’t enough</h2> <p>There’s a pretty good reason why water on its own is not terribly effective at <a href="https://www.cambridge.org/core/journals/proceedings-of-the-nutrition-society/article/eating-habits-and-appetite-control-a-psychobiological-perspective/0D0605739F5150D1A7C49420D75F3CDF">regulating appetite</a>. If it did, prehistoric humans might have starved.</p> <p>But while appetite and satiation – feeling full and not wanting to eat again – aren’t perfectly aligned with being able to <a href="https://pubmed.ncbi.nlm.nih.gov/20736036/">lose weight</a>, it might be a helpful starting point.</p> <p>Part of what helps us to feel full is our stomach. When food enters the stomach, it triggers stretch receptors that in turn lead to the release of hormones which tell us we’re full.</p> <p>But since water is a liquid, it’s rapidly emptied from our stomach – meaning it doesn’t actually fill us up. Even more interestingly, due to the <a href="https://pubmed.ncbi.nlm.nih.gov/16934271/">stomach’s shape</a>, fluids can bypass any semi-solid food content that’s being digested in the lower part of the stomach. This means that water can still be quickly emptied from the stomach. So even if it’s consumed at the end of a meal it might not necessarily extend your feelings of fullness.</p> <p>If you’re trying to eat less and lose weight, drinking excessive amounts of water may not be a great solution. But there is evidence showing when water is mixed with other substances (such as <a href="https://pubmed.ncbi.nlm.nih.gov/30166637/">fibre</a>, <a href="https://www.sciencedirect.com/science/article/pii/0031938494903034">soups</a> or vegetable sauces) this can delay how fast the stomach empties its contents – meaning you feel fuller longer.</p> <p>But while water may not help you lose weight directly, it may still aid in weight loss given it’s the healthiest drink we can choose. Swapping high-calorie drinks such as soda and alcohol for water may be an easy way of reducing the calories you consume daily, which may help with weight loss.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/211311/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/duane-mellor-136502">Duane Mellor</a>, Lead for Evidence-Based Medicine and Nutrition, Aston Medical School, <a href="https://theconversation.com/institutions/aston-university-1107">Aston University</a></em></p> <p><em>Image credits: Shutterstock</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/weight-loss-drinking-a-gallon-of-water-a-day-probably-wont-help-you-lose-weight-211311">original article</a>.</em></p> </div>

Body

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Drinking lots of water may seem like a healthy habit – here’s when and why it can prove toxic

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/adam-taylor-283950">Adam Taylor</a>, <a href="https://theconversation.com/institutions/lancaster-university-1176">Lancaster University</a></em></p> <p>In late 2023, actor <a href="https://www.glamour.com/story/brooke-shields-recently-experienced-a-full-blown-seizure-and-bradley-cooper-came-running?utm_source=instagram&amp;utm_medium=social&amp;utm_content=instagram-bio-link&amp;client_service_id=31196&amp;client_service_name=glamour&amp;service_user_id=1.78e+16&amp;supported_service_name=instagram_publishing&amp;utm_brand=glm&amp;utm_social_type=owned">Brooke Shields</a> suffered a seizure after “flooding” her body with water. Shields became dangerously low on sodium while preparing for her show by drinking loads of water. “I flooded my system and I drowned myself,” she would later explain. “And if you don’t have enough sodium in your blood or urine or your body, you can have a seizure.”</p> <p>Shields said she found herself walking around outside for “no reason at all”, wondering: “Why am I out here?”</p> <blockquote> <p>Then I walk into the restaurant and go to the sommelier who had just taken an hour to watch my run through. That’s when everything went black. Then my hands drop to my side and I go headfirst into the wall.</p> </blockquote> <p>Shields added that she was “frothing at the mouth, totally blue, trying to swallow my tongue”.</p> <p>Like Shields, many people may be unaware of the dangers of drinking excessive amounts of water – especially because hydration is so often associated with health benefits. Models and celebrities <a href="https://www.teenvogue.com/story/drinking-water-flawless-skin#:%7E:text=If%20you're%20reading%20a,long%20hours%20at%20a%20time.">often advocate</a> drinking lots of water to help maintain clear, smooth skin. Some <a href="https://www.independent.co.uk/life-style/75-hard-challenge-before-and-after-tiktok-b2382706.html">social media influencers</a> have promoted drinking a gallon of water daily for weight loss.</p> <p>But excessive water consumption can cause <a href="https://patient.info/treatment-medication/hyponatraemia-leaflet">hyponatraemia</a> – a potentially fatal condition of low sodium in the blood.</p> <h2>Worried about hydration levels? Check your urine</h2> <p>The body strictly regulates its water content to maintain the optimum level of <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2323003/">total body water</a> and “osmolality” – the concentration of dissolved particles in your blood. Osmolality increases when you are dehydrated and decreases when you have too much fluid in your blood.</p> <p>Osmolality is monitored by <a href="https://pubmed.ncbi.nlm.nih.gov/9074779/">osmoreceptors</a> that regulate sodium and water balance in the hypothalamus – the part of the brain that controls numerous hormones. These osmoreceptors signal the release of antidiuretic hormone (ADH), which acts on blood vessels and the kidneys to control the amount of water and salt in the body.</p> <figure><iframe src="https://www.youtube.com/embed/Qghf7Y9ILAs?wmode=transparent&amp;start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <p>In healthy people, the body releases ADH when osmolality becomes high. ADH tells the kidneys to reabsorb water, which makes urine more concentrated. The reabsorbed water dilutes the blood, bringing osmolality back to normal levels.</p> <p>Low blood osmolality suppresses the release of ADH, reducing how much water the kidneys reabsorb. This dilutes your urine, which the body then passes to rid itself of the excess water.</p> <p>Healthy urine should be clear and odourless. Darker, yellower urine with a noticeable odour can indicate dehydration – although medications and certain foods, including <a href="https://pubmed.ncbi.nlm.nih.gov/3433805/">asparagus</a>, can affect urine colour and odour, too.</p> <h2>How much is too much?</h2> <p>Adults should consume <a href="https://www.nhs.uk/live-well/eat-well/food-guidelines-and-food-labels/water-drinks-nutrition/">two-to-three litres per day</a>, of which around 20% comes from food. However, we can lose <a href="https://www.ncbi.nlm.nih.gov/books/NBK236237/">up to ten litres</a> of water through perspiration – so sweating during exercise or in hot weather increases the amount of water we need to replace through drinking.</p> <p>Some medical conditions can cause overhydration. Approximately <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3616165/">one in five</a> schizophrenia patients drink water compulsively, a dangerous condition known as <a href="https://www.theguardian.com/uk-news/2024/apr/15/woman-died-mental-hospital-excessive-water-drinking-inquest#:%7E:text=Woman%20died%20at%20mental%20hospital%20after%20excessive%20water%20drinking%2C%20inquest%20told,-Parents%20of%20Lillian&amp;text=A%20woman%20collapsed%20and%20died,water%2C%20an%20inquest%20has%20heard.">psychogenic polydipsia</a>. One long-term study found that patients with psychogenic polydipsia have a <a href="https://pubmed.ncbi.nlm.nih.gov/18984069/">“74% greater chance</a> of dying before a non-polydipsic patient”.</p> <p>In <a href="https://pubmed.ncbi.nlm.nih.gov/22306188/">some cases</a>, people with <a href="https://psychiatry-psychopharmacology.com/en/childhood-and-adolescence-disorders-psychogenic-polydipsia-in-an-adolescent-with-eating-disorder-a-case-report-132438">anorexia nervosa</a> can also suffer from compulsive water drinking.</p> <figure><iframe src="https://www.youtube.com/embed/ReQew2zcN7c?wmode=transparent&amp;start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <p>For those suffering from polydipsia, treatment is focused on medication to reduce the <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10675986/">urge to drink</a>, as well as <a href="https://www.uptodate.com/contents/overview-of-the-treatment-of-hyponatremia-in-adults/print">increasing sodium levels</a>. This should be done gradually to avoid causing <a href="https://www.ncbi.nlm.nih.gov/books/NBK562251/">myelinolysis</a> – <a href="https://www.ncbi.nlm.nih.gov/books/NBK551697/">neurological damage</a> caused by rapid changes in sodium levels in nerve cells.</p> <p>In rare but often highly publicised cases such as that of <a href="http://news.bbc.co.uk/onthisday/hi/dates/stories/november/13/newsid_2516000/2516593.stm">Leah Betts</a> in 1995, some users of the illegal drug MDMA (also known as <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6119400/">ecstasy)</a> have <a href="https://pubmed.ncbi.nlm.nih.gov/11265566/">died</a> after drinking copious amounts of water to rehydrate after dancing and sweating.</p> <p>The drug <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5008716/">increases body temperature</a>, so users drink water to avoid overheating. Unfortunately, MDMA also triggers the <a href="https://pubmed.ncbi.nlm.nih.gov/12105115/">unnecessary release of ADH</a>, causing water retention. The body becomes unable to rid itself of excess water, which affects its electrolyte levels – causing cells to swell with water.</p> <p>Symptoms of water intoxication start with nausea, vomiting, blurred vision and dizziness. As the condition progresses, sufferers can often display symptoms of <a href="https://www.nhs.uk/mental-health/conditions/psychosis/symptoms/">psychosis</a>, such as inappropriate behaviour, confusion, delusions, disorientation and hallucinations.</p> <p>These symptoms are caused by <a href="https://www.ncbi.nlm.nih.gov/books/NBK470386/">hyponatraemia</a>, where sodium levels are diluted or depleted in blood and the subsequent imbalance of electrolytes affects the nervous system. Water begins to move into the brain causing <a href="https://www.sciencedirect.com/science/article/pii/S1572349604000149">a cerebral oedema</a> – brain swelling because of excessive fluid buildup, which is usually fatal if not treated.</p> <p>A healthy body will tell you when it needs water. If you’re thirsty and your urine is dark with a noticeable odour, then you need to drink more. If you aren’t thirsty and your urine is clear or the colour of light straw, then you’re already doing a good job of hydrating yourself.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/228715/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/adam-taylor-283950"><em>Adam Taylor</em></a><em>, Professor and Director of the Clinical Anatomy Learning Centre, <a href="https://theconversation.com/institutions/lancaster-university-1176">Lancaster University</a></em></p> <p><em>Image credits: Shutterstock</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/drinking-lots-of-water-may-seem-like-a-healthy-habit-heres-when-and-why-it-can-prove-toxic-228715">original article</a>.</em></p> </div>

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A tax on sugary drinks can make us healthier. It’s time for Australia to introduce one

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/peter-breadon-1348098">Peter Breadon</a>, <a href="https://theconversation.com/institutions/grattan-institute-1168">Grattan Institute</a> and <a href="https://theconversation.com/profiles/jessica-geraghty-1530733">Jessica Geraghty</a>, <a href="https://theconversation.com/institutions/grattan-institute-1168"><em>Grattan Institute</em></a></em></p> <p>Sugary drinks cause weight gain and <a href="https://www.nature.com/articles/s41574-021-00627-6">increase the risk</a> of a range of diseases, including diabetes.</p> <p>The <a href="https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2792842">evidence shows</a> that well-designed taxes can reduce sugary drink sales, cause people to choose healthier options and get manufacturers to reduce the sugar in their drinks. And although these taxes haven’t been around long, there are already signs that they are making people healthier.</p> <p>It’s time for Australia to catch up to the rest of the world and introduce a tax on sugary drinks. As our new Grattan Institute <a href="https://grattan.edu.au/report/sickly-sweet/">report</a> shows, doing so could mean the average Australian drinks almost 700 grams less sugar each year.</p> <h2>Sugary drinks are making us sick</h2> <p>The share of adults in Australia who are obese has tripled since 1980, from <a href="https://theconversation.com/mapping-australias-collective-weight-gain-7816">10%</a> to more than <a href="https://www.abs.gov.au/statistics/health/health-conditions-and-risks/waist-circumference-and-bmi/latest-release">30%</a>, and diabetes is our <a href="https://www.diabetesaustralia.com.au/about-diabetes/diabetes-in-australia/">fastest-growing</a> chronic condition. The costs for the health system and economy are measured in the billions of dollars each year. But the biggest costs are borne by individuals and their families in the form of illness, suffering and early death.</p> <p>Sugary drinks are a big part of the problem. The more of them we drink, the greater our risk of <a href="https://www.nature.com/articles/s41574-021-00627-6">gaining weight</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2963518/">developing type 2 diabetes</a>, and suffering <a href="https://academic.oup.com/eurpub/article/31/1/122/5896049?login=false">poor oral health</a>.</p> <p>These drinks have no real nutrients, but they do have a lot of sugar. The average Australian consumes <a href="https://www.abs.gov.au/statistics/health/health-conditions-and-risks/apparent-consumption-selected-foodstuffs-australia/latest-release">1.3</a> times the maximum recommended amount of sugar each day. Sugary drinks are responsible for more than one-quarter of our daily sugar intake, more than any other major type of food.</p> <p>You might be shocked by how much sugar you’re drinking. Many 375ml cans of soft drink contain eight to 12 teaspoons of sugar, nearly the entire daily recommended limit for an adult. Many 600ml bottles blow our entire daily sugar budget, and then some.</p> <p>The picture is even worse for disadvantaged Australians, who are more likely to have <a href="https://www.abs.gov.au/statistics/health/health-conditions-and-risks/diabetes/latest-release">diabetes</a> and <a href="https://www.abs.gov.au/statistics/health/health-conditions-and-risks/waist-circumference-and-bmi/latest-release">obesity</a>, and who also consume the most sugary drinks.</p> <h2>Sugary drink taxes work</h2> <p>Fortunately, there’s a proven way to reduce the damage sugary drinks cause.</p> <p>More than <a href="https://ssbtax.worldbank.org/">100 countries</a> have a sugary drinks tax, covering most of the world’s population. <a href="https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2792842">Research</a> shows these taxes lead to higher prices and fewer purchases.</p> <p>Some taxes are specifically designed to encourage manufacturers to change their recipes and cut the sugar in their drinks. Under these “tiered taxes”, there is no tax on drinks with a small amount of sugar, but the tax steps up two or three times as the amount of sugar rises. That gives manufacturers a strong incentive to add less sugar, so they reduce their exposure to the tax or avoid paying it altogether.</p> <p>This is the best result from a sugary drinks tax. It means drinks get healthier, while the tax is kept to a minimum.</p> <p>In countries with tiered taxes, manufacturers have slashed the sugar in their drinks. In the United Kingdom, the share of products above the tax threshold <a href="https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1003025">decreased dramatically</a>. In 2015, more than half (52%) of products in the UK were above the tax threshold of 5 grams of sugar per 100ml. Four years later, when the tax was in place, that share had plunged to 15%. The number of products with the most sugar – more than 8 grams per 100ml – declined the most, falling from 38% to just 7%.</p> <p>The Australian drinks market today looks similar to the UK’s before the tax was introduced.</p> <p>Health benefits take longer to appear, but there are already promising signs that the taxes are working. Obesity among primary school-age girls has fallen in <a href="https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1004160">the UK</a> and <a href="https://jamanetwork.com/journals/jamapediatrics/fullarticle/2786784">Mexico</a>.</p> <p>Oral health has also improved, with studies reporting fewer children going to hospital to get their teeth removed in <a href="https://nutrition.bmj.com/content/6/2/243">the UK</a>, and reduced dental decay <a href="https://pubmed.ncbi.nlm.nih.gov/33853058/">in Mexico</a> and <a href="https://www.ajpmonline.org/article/S0749-3797(23)00069-7/abstract">Philadelphia</a>.</p> <p>One <a href="https://www.ajpmonline.org/article/S0749-3797(23)00158-7/fulltext">study from the United States</a> found big reductions in gestational diabetes in cities with a sugary drinks tax.</p> <h2>The tax Australia should introduce</h2> <p>Like successful taxes overseas, Australia should introduce a sugary drink tax that targets drinks with the most sugar:</p> <ul> <li>drinks with 8 grams or more of sugar per 100ml should face a $0.60 per litre tax</li> <li>drinks with 5–8 grams should be taxed at $0.40 per litre</li> <li>drinks with less than 5 grams of sugar should be tax-free.</li> </ul> <p>This means a 250ml Coke, which has nearly 11 grams of sugar per 100ml, would cost $0.15 more. But of course consumers could avoid the tax by choosing a sugar-free soft drink, or a bottle of water.</p> <p>Grattan Institute <a href="https://grattan.edu.au/report/sickly-sweet/">modelling</a> shows that under this tiered tax, Australians would drink about 275 million litres fewer sugary drinks each year, or the volume of 110 Olympic swimming pools.</p> <p>The tax is about health, but government budgets also benefit. If it was introduced today, it would raise about half a billion dollars in the first year.</p> <p>Vested interests such as the beverages industry have fiercely resisted sugary drink taxes around the world, issuing disingenuous warnings about the risks to poor people, the sugar industry and drinks manufacturers.</p> <p>But our new report shows sugary drink taxes have been introduced smoothly overseas, and none of these concerns should hold Australia back.</p> <p>We certainly can’t rely on industry pledges to voluntarily reduce sugar. They have been <a href="https://www.cambridge.org/core/journals/public-health-nutrition/article/trends-in-sugar-content-of-nonalcoholic-beverages-in-australia-between-2015-and-2019-during-the-operation-of-a-voluntary-industry-pledge-to-reduce-sugar-content/EE662DE7552670ED532F6650C9D56939">weak</a> and misleading, and <a href="https://www.theguardian.com/australia-news/2024/apr/10/sugar-increase-in-fanta-and-sprite-prompts-calls-for-new-tax-on-australia-food-and-drinks-industry">failed to stick</a>.</p> <p>It will take many policies and interventions to turn back the tide of obesity and chronic disease in Australia, but a sugary drinks tax should be part of the solution. It’s a policy that works, it’s easy to implement, and most Australians <a href="https://bmjopen.bmj.com/content/9/6/e027962">support it</a>.</p> <p>The federal government should show it’s serious about tackling Australia’s biggest health problems and take this small step towards a healthier future.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/228906/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/peter-breadon-1348098">Peter Breadon</a>, Program Director, Health and Aged Care, <a href="https://theconversation.com/institutions/grattan-institute-1168">Grattan Institute</a> and <a href="https://theconversation.com/profiles/jessica-geraghty-1530733">Jessica Geraghty</a>, Senior Associate, <a href="https://theconversation.com/institutions/grattan-institute-1168">Grattan Institute</a></em></p> <p><em>Image credits: Getty Images </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/a-tax-on-sugary-drinks-can-make-us-healthier-its-time-for-australia-to-introduce-one-228906">original article</a>.</em></p> </div>

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AFP commander resigns after drink driving accident

<p>Former Australian Federal Police commander Danielle Anne Woodward has resigned after she drunkenly crashed her car into a tree following a police function in Canberra.</p> <p>The Olympic medalist pleaded guilty to a drink driving charge in the ACT Magistrates Court after blowing nearly three times the legal limit in November 2023. </p> <p>Woodward had attended an end-of-year function on the night of the accident, and intended to walk home or catch an Uber, but felt unwell after drinking champagne, so she decided to take the short drive back home. </p> <p>However, she crashed into a tree on her way home causing “extensive front-end damage” to her Mercedes-Benz. </p> <p>After getting help from members of the public, she immediately reported the incident to her supervisor and told him she had alcohol in her system.</p> <p>She also reportedly co-operated with lower-ranking officials who attended the scene, with the defence saying that she was "frank in her submission". </p> <p>"She was certainly not belligerent," Woodward's lawyer Michael Kukulies-Smith told the court. </p> <p>She was then arrested and taken to the police station for a breath analysis, which came back with a reading of 0.148. </p> <p>A police statement of facts also said that officers found Woodward with a flushed face and sleepy, watery eyes.</p> <p>“Police could smell a strong odour of intoxicating liquor emanating from [Woodward] and formed the opinion that [she] was well under the influence,” the statement of facts read. </p> <p>The court also heard that Woodward had been experiencing a "high level" of stress from her job, so had "at times resorted to alcohol, in a way she has been able to control."</p> <p>"The offending conduct is not only out of character … [but] her actions are usually the complete opposite. They're usually designed to benefit and protect the community," prosecutor Samuel Carmichael said.</p> <p>Woodward's lawyer asked Chief Magistrate Lorraine Walker to record a non-conviction, as this was a "one off" offence, and the media coverage of the accident had already caused her "an unusual degree of reputational damage", which has impacted her mental health and career. </p> <p>While Magistrate Walker agreed to a non-conviction, she said that a general deterrence still needed to be served, with Woodward disqualified from driving for six months, taking into account a 90-day immediate suspension notice that was issued after the crash.</p> <p>The Chief Magistrate told the court: "What ultimately influences me … is Ms Woodward is a woman suffering from ill health.</p> <p>"It is often people of good standing in this community … who find themselves before the court for this type of offence."</p> <p>She also said that Woodward had shown “obvious and palpable” remorse, and was not someone who would ordinarily demonstrate “this level of stupidity”. </p> <p>Woodward was a highly decorated police officer who worked for the AFP for almost four decades. She became a commander in 2022 and received a Medal of the Order of Australia (OAM) in 2002.</p> <p>In 2020 she was awarded the Australian Police Medal in the Australia Day honours. </p> <p>Prior to her role in the AFP, she was a a triple Olympian in slalom canoeing and won a silver medal at the 1992 Barcelona Olympics. </p> <p><em>Image: ABC News</em></p>

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