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

<div class="theconversation-article-body"> <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> Have you heard the saying “water is life?” Well, it’s true. 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. 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. <h2>Why hydration is important</h2> 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. 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>. 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. <h2>How much fluid do you need?</h2> 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. 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. 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&utm_medium=email&utm_content=20221016&utm_term=7386723&utm_campaign=health&utm_id=31926817&orgid=&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. 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. 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. To check your specific requirements, check out the Australian <a href="https://www.nrv.gov.au/nutrients/water">guidelines</a> for fluid intake. <h2>People who should take extra care</h2> Some people are at greater risk of the harmful health effects from dehydration and need to pay special attention to their fluid intake. 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. 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. <h2>Ten ideas for keeping fluids up this summer</h2> <ol> <li> Download a water reminder app on your phone This will help keep you on track during the day and give you digital “high fives” when you hit your water goals. </li> <li> Add sugar-free flavouring 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! </li> <li> Add some fresh fruit 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. </li> <li> Make a jug of iced tea (not the bottled stuff) 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. </li> <li> Add a dash of cordial to your water 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. </li> <li> Make a fruit ‘slushie’ Combine fresh fruit, ice and water at home in the morning and sip to increase your fluid intake for the day. </li> <li> Buy a soda maker for your home 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. </li> <li> Before you eat anything, have a glass of water Make it a rule with yourself to have a glass of water before every snack or meal. </li> <li> Eat water-rich fruits and vegetables 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. </li> <li> Use a water bottle Take it with you during the day and keep it by your bed overnight. </li> </ol> <h2>A tip on water bottles</h2> 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. Having a water bottle you enjoy using can go a long way in helping you keep up your fluids during the day. 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). 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! <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> Image credits: Shutterstock 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>. </div>

Body

Major twist in probe into water polo coach's death

A probe into the tragic death of a water polo coach at St Andrew's Cathedral School has revealed an astonishing twist in the investigation. Lilie James, 21, was found dead inside a gymnasium bathroom at the Sydney school on October 25th last year, as police issued a warrant for Paul Thijssen's arrest in connection to her death. A school staffer let police officers into the building at Town Hall Square, where Lilie's "unrecognisable" body was found, left with "serious head injuries". In the days after Lilie's death, police established a second crime scene at The Gap in Sydney's east where they recovered Thijssen's body. Now, as a probe into her death continues, insiders have revealed to Daily Mail Australia that St Andrews Cathedral School principal Dr Julie McGonigle has been told the school will not be considered an "interested party" at the coronial inquiry into the deaths. The exclusion comes despite teachers and students having intimate knowledge and involvement with Ms James and school hockey coach Thijssen prior to the murder, and school staff having assisted in the discovery of the horrific crime scene. School principal Dr McGonigle revealed in her latest Head of School Newsletter that "at this stage, the State Coroner does not consider St Andrew's Cathedral School to have sufficient interest in this matter to be considered an interested party, pursuant to the Coroners Act". The inquest into the deaths of Lilie Anne James and Paul Thomas Stephan Thijssen will be held over three days from March 18th next year. Image credits: Facebook

Legal

"Green cordial" water in Sydney harbour baffles residents

A bay in Sydney Harbour has turned neon green, with authorities currently investigating the cause. Locals were baffled when they saw the bay along Hipwood Street in Kirribilli, near Milsons Park, turn bright green at about 3pm on Wednesday, with many calling the incident "unusual". Firefighters said they were "alerted to a large spill of fluorescent green material flowing into the harbour". One local described the water as "green cordial" and said it resembled "radioactive stuff you see in superhero movies". NSW Fire and Rescue then conducted several tests and said the water is not toxic and is currently not harming the environment. The Fire and Rescue team are now trying to flush out the green substance, and said that the incoming rain should help turn the water colour back to normal. Another resident told 9News that they had seen green water in a stormwater drain at Anderson Park, along Clark Road, on Tuesday, before the green colour spread to the bay on Wednesday. Later in the afternoon, a North Sydney Council spokeswoman confirmed that were no major pollutants in the green water: “At this stage our engineers believe the substance is likely to be fluorescein, which is used as a dye for plumbing works. Fluorescein is a non-toxic substance and breaks down with UV light. The green colour is a feature that makes it easy to trace.” Green water was also spotted in Neutral Bay on Wednesday according to another local. Image: Nine

Travel Trouble

200-year-old message in a bottle unearthed

In a discovery that has the archaeology world buzzing (and possibly rolling its ancient eyes), a team of student volunteers in northern France has unearthed something rather unexpected during their dig at a Gaulish village. While they were hoping for the usual – ancient pottery shards, perhaps a coin or two – they instead stumbled upon what can only be described as the 19th-century equivalent of a DM in a bottle. The scene played out like a low-budget historical drama: volunteers painstakingly sifting through centuries-old dirt on the cliff-tops near Dieppe when, voilà! They found an earthenware pot containing a small glass vial, like something you might see in a vintage pharmacy, but with fewer essential oils and more existential surprises. Guillaume Blondel, the team leader and head of the archaeological service for the nearby town of Eu, was immediately intrigued. “It was the kind of vial that women used to wear around their necks containing smelling salts,” he explained, before casually dropping the bombshell: inside the vial was a note. Cue dramatic music. After what we can only assume was a long, suspenseful pause, Blondel and his team opened the note, which turned out to be written by none other than P.J. Féret, a 19th-century intellectual who clearly had a flair for both excavation and theatrics. The note, written with all the panache of a man who had just unearthed Caesar’s salad fork, read: "P.J. Féret, a native of Dieppe, member of various intellectual societies, carried out excavations here in January 1825. He continues his investigations in this vast area known as the Cité de Limes or Caesar’s Camp." Naturally, Blondel was floored. “It was an absolutely magic moment,” he said, no doubt imagining Féret winking at him from the beyond. “We knew there had been excavations here in the past, but to find this message from 200 years ago? It was a total surprise.” Local records confirm that P.J. Féret was indeed the real deal. He wasn’t just a dabbler in dirt – he was a notable dabbler in dirt who had conducted an earlier dig at the site in 1825. In a stroke of irony not lost on Blondel, he mused, “Most archaeologists prefer to think that there won’t be anyone coming after them because they’ve done all the work.” Féret, however, clearly believed in leaving a trail of breadcrumbs – or, in this case, a literal note in a bottle, just to remind future archaeologists that he got there first. Féret: 1, Modern Archaeology: 0. Of course, this whole affair raises some important questions: Did Féret expect someone to find this? Did he laugh to himself as he buried it, imagining Blondel’s reaction? Did Féret know how cliff erosion would eventually turn his humble Gaulish village into a treasure trove for future archaeologists? Or was he simply trolling them from the past? Whatever the case, Féret’s note may not have contained ancient secrets, but it certainly delivered some 19th-century sass. And if we’ve learned anything from this dig, it’s this: archaeology isn’t just about discovering the past – it’s also about being occasionally roasted by it. As Blondel and his team continue their emergency dig (which was ordered due to cliff erosion eating away at the site like a bad buffet), they’ve already uncovered a number of artefacts, mostly pottery, from around 2,000 years ago. But will any of them have the audacity to leave a note for the archaeologists of 2225? We’ll have to wait and see. In the meantime, Féret is probably laughing somewhere in the afterlife, shaking his head and muttering, “Amateurs”. Images: Guillaume Blondel / Facebook

International Travel

Crowds, water guns and protests: could ‘slow tourism’ be the answer to an overtourism backlash?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/amy-errmann-1360032">Amy Errmann</a>, <a href="https://theconversation.com/institutions/auckland-university-of-technology-1137">Auckland University of Technology</a> With overtourism in the spotlight as the travel industry continues to rebound after the pandemic, popular destinations around the world are feeling the strain. Bali is overwhelmed by <a href="https://thebalisun.com/concerns-increasing-about-impact-of-trash-and-traffic-on-bali-tourists/">waste and traffic</a>, Australia’s sacred sites have suffered <a href="https://www.bbc.com/news/world-australia-50151344">environmental damage</a>, New York is facing rising rents <a href="https://www.theguardian.com/us-news/2023/oct/23/new-york-airbnb-crackdown-rules-housing">due to short-term rentals</a>, and Singapore’s scenic spots are becoming <a href="https://www.channelnewsasia.com/singapore/overtourism-locals-tourists-sustainable-tourism-stb-focus-4517681">clogged with crowds</a>. Frustrated locals are pushing back – from <a href="https://www.nzherald.co.nz/travel/barcelona-locals-spray-tourists-with-water-guns-during-protest-over-housing-costs/FUFHXKO5X5F5NNPSU6ELNVGSIA/">spraying water at tourists </a> in Barcelona to <a href="https://adventure.com/venice-locals-squatting-against-overtourism-photography/">organising protests in Venice</a>. As the northern hemisphere high season ends, Aotearoa New Zealand is preparing for an influx of visitors ahead of its summer tourism season. And much like those other <a href="https://www.nytimes.com/2024/09/08/world/europe/greece-cruise-ships-tourists-islands.html">tourist hotspots</a>, the government is looking at how to manage the negative effects of tourism on local communities and the environment. This includes tripling the <a href="https://www.theguardian.com/world/article/2024/sep/04/new-zealand-to-nearly-triple-tourist-tax-for-international-visitors">international tourist tax</a> from NZ$35 to $100. The aim of the increase is to <a href="https://www.theguardian.com/world/2022/aug/11/new-zealand-tourism-minister-makes-pitch-to-the-rich-as-he-spurns-10-a-day-travellers">attract tourists</a> who are more mindful of their impact and willing to contribute to its mitigation, while also <a href="https://theconversation.com/welcome-to-nz-now-pay-up-the-risks-and-rewards-of-raising-the-foreign-tourist-tax-232138">reducing visitor numbers</a> to protect the country’s unique landscapes and cultures. But are there other ways the tourism industry can evolve to ensure benefits for both travellers and the communities they are visiting? So called “slow travel” could be the answer. <h2>Hunting the perfect photo</h2> Overtourism isn’t just about too many people in one place. It’s also about how people travel. <a href="https://edition.cnn.com/travel/social-media-tourism-effect-scn-wellness/index.html">Instagram-famous</a> landmarks draw massive crowds, <a href="https://www.rnz.co.nz/news/national/406195/visitors-ignore-ban-continue-to-visit-mermaid-pools-in-northland-hapu">disrupting local life</a> and sometimes even <a href="https://www.nzherald.co.nz/travel/vermot-town-famous-for-fall-foliage-bans-instagram-tourists-from-streets/BHKEYKKUTNHORFT6QCZ5TW333A/#google_vignette">leading to closures</a>. Travellers often pack their itineraries with as many sights as possible, racing from one place to another in a frenzy to capture the perfect photo. This hurried approach not only creates <a href="https://www.cntraveler.com/galleries/2015-06-19/barcelona-bhutan-places-that-limit-tourist-numbers">congestion</a> but also limits <a href="https://www.nature.com/articles/s41599-024-02859-z">meaningful engagement with the destination</a>. And it’s not just a numbers game. The way tourists behave also plays a critical role. A <a href="https://www.rnz.co.nz/national/programmes/ninetonoon/audio/2018690535/tropical-trash-the-impact-of-holidaying-in-the-pacific">2019 report</a> from the United Nations raised concerns about trash from tourists in developing small island states, including the Pacific Islands. According to the report, a tourist visiting these communities produced about 7kg of waste a day, compared to about 2.5kg produced by a local. The issue is not necessarily about travelling less, but about <a href="https://www.sciencedirect.com/science/article/pii/S2211973623000284">travelling more responsibly</a>. The tourism industry needs to be encouraging travel habits that allow both visitors and locals to enjoy tourism without compromising the integrity of the destination. <h2>The rise of slow travel</h2> Mindfulness – being fully present in the moment – has gained popularity since the 1970s. The concept has influenced a number of sectors, including <a href="https://slowfoodauckland.co.nz/">slow food</a>, <a href="https://ourwayoflife.co.nz/slow-fashion-101-what-to-buy-and-what-to-avoid-to-reduce-your-clothing-footprint/">slow fashion</a>, and now <a href="https://www.lakewanaka.co.nz/wanaka-stories/how-to-be-a-slow-mindful-traveler-in-wanaka/">slow travel</a>. It’s about <a href="https://link.springer.com/chapter/10.1007/978-3-031-63569-4_44#:%7E:text=Slow%20travel%2C%20mindful%20travel%2C%20or,spiritual%20well%2Dbeing%20of%20people">experiencing destinations</a> at a relaxed pace, focusing on deeper connections with local cultures and sustainability. This often means <a href="https://guestnewzealand.com/about-us/eco-travels-new-zealand/">staying longer in fewer places</a> and choosing eco-friendly transport. Understanding slow travel and mindfulness is important because they create <a href="https://www.forbes.com/sites/rogersands/2024/06/08/the-beauty-of-slow-travel/">richer, more memorable experiences</a>. Fast, <a href="https://www.sciencedirect.com/science/article/pii/S0261517724000487">hectic travel</a> often leaves little positive impact. Slow immersive travel, on the other hand, fosters lasting memories and reduces overtourism, pollution and cultural damage. <a href="https://www.tandfonline.com/doi/full/10.1080/00913367.2024.2325144">Research</a> shows when we consciously immerse ourselves in our surroundings we can have more meaningful experiences. Surprisingly, <a href="https://www.sciencedirect.com/science/article/pii/S0261517724000487">even luxury travel</a> – often dismissed as wasteful – can encourage respect and mindfulness for those who invest financially and mentally in their journey, unlike cheaper, mainstream tourism. Activities such as “<a href="https://www.sciencedirect.com/science/article/pii/S2666957921000197">forest bathing</a>”, <a href="https://www.visitutah.com/articles/mindful-hiking">hiking</a> or engaging with <a href="https://www.outofyourcomfortzone.net/a-guide-to-slow-travel-immersing-yourself-in-local-cultures/">local cultures</a> <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6723984/">boost wellbeing and meaning</a>, going beyond just “taking a photo for likes”. This mindful approach can <a href="https://www.sciencedirect.com/science/article/pii/S0160738321001419">change our behaviour on a personal level</a>. By focusing attention on fewer experiences, <a href="https://www.tandfonline.com/doi/full/10.1080/00913367.2024.2325144">travellers can heighten</a> their sense of awe and appreciation, making the travel more memorable. This idea is evident in “<a href="https://journals.sagepub.com/doi/abs/10.1177/002216786200200102?casa_token=PrIQTkCMjx0AAAAA:wtswfg0cuEuQec0zVg-Mbf9MuXYoqhQkWbaQCGdjxWkYUpVOwBu8Op5jC6V4nOghnow3xpwN3fDn">peak experiences</a>”. Disney, for example, creates <a href="https://ideaexchange.uakron.edu/docam/vol9/iss2/6/">emotionally-charged moments</a> that stick in visitors’ minds. Other experiences, such as “<a href="https://journals.sagepub.com/doi/full/10.1177/14614448211072808">digital detoxes</a>” or <a href="https://academic.oup.com/jcr/article-abstract/45/6/1142/4999270">pilgrimages</a> can leave a contemplative impression. By concentrating on a single aspect of a visit, it <a href="https://www.sciencedirect.com/science/article/pii/S0160738320300797?casa_token=Np4PXLk5RqsAAAAA:Q3440A-lsf-XTAWuboPPbIcnvBAhk8nnIoWyF-gynHkSPmyPaykzfpBhTLbFDBHZEX0bbtZJgQ">becomes special and memorable</a>. Even in busy places like Disneyland, focusing on one unique element can make the experience feel slower and more meaningful. <h2>The sustainability of tourism</h2> In the <a href="https://www.sciencedirect.com/science/article/pii/S0261517724000487">Faroe Islands</a>, slow travel helps protect local traditions and landscapes by encouraging thoughtful visitor behaviour, such as using local guides to minimise environmental impact. New Zealand can leverage its natural beauty to offer similar immersive experiences. <a href="https://www.nzherald.co.nz/travel/travel-well-what-is-mindful-hiking-walking-for-wellbeing-boost/67MYS6ZSNXC7ZH6OTZ2DLBGFL4/">Tramping</a> (hiking), for example, can promote a mindful connection with the environment. But even here, there needs to be a focus on balancing tourism with preservation. Popular spots, such as the Department of Conservation huts and the Te Araroa Trail, are <a href="https://www.wildernessmag.co.nz/te-araroa-trail-shows-pressure/">already becoming crowded</a>. It is essential to educate visitors on <a href="https://www.mpi.govt.nz/outdoor-activities/tramping-tips-to-prevent-spreading-pests-and-diseases/biosecurity-considerations-walking-and-tramping/">responsible practices</a> – such as cleaning equipment – to ensure they understand their <a href="https://www.doc.govt.nz/heritage-and-visitor-strategy#:%7E:text=The%20natural%2C%20cultural%20and%20historic,wellbeing%2C%20enabling%20communities%20to%20thrive.">role in protecting nature</a>. Travel that fosters a deeper appreciation for local cultures and environments benefits both visitors and the destinations they explore. The challenge is finding the right balance – encouraging meaningful travel experiences while still ensuring accessibility for all.<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/238316/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/amy-errmann-1360032">Amy Errmann</a>, Senior Lecturer, Marketing & International Business, <a href="https://theconversation.com/institutions/auckland-university-of-technology-1137">Auckland University of Technology</a> Image credits: Shutterstock 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/crowds-water-guns-and-protests-could-slow-tourism-be-the-answer-to-an-overtourism-backlash-238316">original article</a>. </div>

Travel Trouble

Rare coin hidden for decades to fetch eye-watering sum

Three sisters from the US who inherited a dime coin kept it in a bank vault for more than 40 years, and while they know it had some value, they didn't know just how much until a few years ago. The rare coin, struck by the US Mint in San Francisco in 1975, could be worth more than $US500,000 ($748,000), according to Ian Russell, president of GreatCollections, the auction house selling the coin. What makes the coin depicting President Franklin D. Roosevelt so valuable is that it is just one of two coins missing the "S" mint mark for San Francisco. The other dime sold for $US682,000 (over $1 million) at a 2019 auction and then again months later to a private collector. While avid coin collectors have known about the existence of these two extraordinarily rare coins, their whereabouts had remained a mystery since the late 1970s. “They were hidden for decades,” Russell said. “Most major collectors and dealers have never seen one.” The three sisters from Ohio, who want to remain anonymous, inherited one of the two dimes after the recent death of their of their brother, Russell said. They told Russell that their brother and mother bought the first error coin discovered in 1978 for $27,225, which would amount to roughly $135,000 today. Their parents, who ran a dairy farm, saw the coin as a financial safety net, and it was only until last year that one of the sisters saw the coin first-hand. Russell also said that their brother had reached out to him about seven years ago and told him about the coin, but he too kept it a secret. When Russell told one of the sisters about the potential value of the coin, she told him: “is that really possible?”. The coin, known as the “1975 ‘no S’ proof dime,” will be displayed at a coin show beginning on Wednesday in Tampa, Florida, and before <a href="https://www.greatcollections.com/Coin/1655587" target="_blank" rel="noopener">the auction</a> closes late next month, Russell said. The current highest bidder has offered $US250,000 ($374,000). Images: Great Collections/ Professional Coin Grading Services

Money & Banking

Is still water better for you than sparkling water?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/christian-moro-121754">Christian Moro</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> and <a href="https://theconversation.com/profiles/charlotte-phelps-1187658">Charlotte Phelps</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Still or sparkling? It’s a question you’ll commonly hear in a café or restaurant and you probably have a preference. But is there any difference for your health? If you love the fizz, here’s why you don’t have to pass on the sparkling water. <h2>What makes my water sparkle?</h2> This article specifically focuses on comparing still filtered water to carbonated filtered water (called “sparkling water” or “unflavoured seltzer”). Soda water, mineral water, tonic water and flavoured water are similar, but not the same product. The bubbles in sparkling water are created by adding carbon dioxide to filtered water. It reacts to produce carbonic acid, which makes sparkling water more acidic (a pH of <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5747581/">about 3.5</a>) than still (closer to neutral, with a pH around 6.5-8.5). <h2>Which drink is healthiest?</h2> Water is the best way to hydrate our bodies. Research shows when it comes to <a href="https://pubmed.ncbi.nlm.nih.gov/26702122/">hydration</a>, still and sparkling water are <a href="https://www.jstage.jst.go.jp/article/jnsv/58/5/58_333/_article">equally effective</a>. Some people believe water is healthier when it comes from a sealed bottle. But in Australia, tap water is <a href="https://www.waterquality.gov.au/guidelines/drinking-water">monitored very carefully</a>. Unlike bottled water, it also has the added benefit of fluoride, which can help protect young children against <a href="https://linkinghub.elsevier.com/retrieve/pii/S0002-8177(14)60225-7">tooth decay</a> and cavities. Sparkling or still water is always <a href="https://pubmed.ncbi.nlm.nih.gov/30354445/">better</a> than artificially sweetened flavoured drinks or juices. <h2>Isn’t soda water bad for my teeth and bones?</h2> There’s no evidence sparkling water damages your bones. While drinking a lot of soft drinks is linked to increased <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7071508/">fractures</a>, this is largely due to their association with higher rates of obesity. Sparkling water is more acidic than still water, and acidity can soften the teeth’s <a href="https://pubmed.ncbi.nlm.nih.gov/35635779/">enamel</a>. Usually this is not something to be too worried about, unless it is mixed with sugar or citrus, which has much higher levels of acidity and can harm teeth. However, if you grind your teeth often, the softening could enhance the <a href="https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/teeth-grinding#risk-factors-for-tooth-grinding">damage it causes</a>. If you’re undertaking a home whitening process, sparkling water <a href="https://pubmed.ncbi.nlm.nih.gov/39123328/">might discolour</a> your teeth. In most other cases, it would take a lot of sparkling water to pass by the teeth, for a long period of time, to cause any noticeable damage. <h2>How does drinking water affect digestion?</h2> There is a <a href="https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/digestion/faq-20058348">misconception</a> drinking water (of any kind) with a meal is bad for digestion. While theoretically water could dilute stomach acid (which breaks down food), the practice of drinking it doesn’t appear <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11045127/">to have any negative effect</a>. Your digestive system simply adapts to the consistency of the meal. Some people do find that carbonated beverages cause some stomach upset. This is due to the build-up of <a href="https://www.sciencedirect.com/science/article/pii/S0939475309000787">gases</a>, which can cause bloating, cramping and discomfort. For people with an <a href="https://www.nature.com/articles/s41598-023-44916-8">overactive bladder</a>, the acidity might also aggravate the <a href="https://journals.physiology.org/doi/full/10.1152/ajpcell.00441.2022">urinary</a> system. Interestingly, the fizzy “<a href="https://pubmed.ncbi.nlm.nih.gov/34399552/">buzz</a>” you feel in your mouth from sparkling water fades the more you drink it. <h2>Is cold water harder to digest?</h2> You’ve chosen still or sparkling water. What about its temperature? There are surprisingly few studies about the effect of drinking cold water compared to room temperature. There is some evidence colder water (at two degrees Celsius) might inhibit <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7000532/">gastric contractions</a> and slow down digestion. Ice water may constrict blood vessels and cause <a href="https://www.sciencedirect.com/science/article/abs/pii/0306362383900642">cramping</a>. However other research suggests drinking cold water might temporarily boost <a href="https://academic.oup.com/jcem/article/88/12/6015/2661518">metabolism</a>, as the body needs to expend energy to warm it up to body temperature. This effect is minimal and unlikely to lead to significant <a href="https://academic.oup.com/jcem/article/91/9/3598/2656772">weight loss</a>. <h2>Which water wins?</h2> The bottom line is water is essential, hydrates us and has countless other <a href="https://news.com.au/lifestyle/health/diet/fewer-than-25-per-cent-simple-question-most-aussies-cant-answer/news-story/04693f23f03d9e8b6483cf34b47d9fcb">health benefits</a>. Water, with carbonated bubbles or without, will always be the healthiest drink to choose. And if you’re concerned about any impact to teeth enamel, one trick is to follow sparkling water with a glass of still. This helps rinse the teeth and return your mouth’s acidity back to normal.<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/237125/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/christian-moro-121754">Christian Moro</a>, Associate Professor of Science & Medicine, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> and <a href="https://theconversation.com/profiles/charlotte-phelps-1187658">Charlotte Phelps</a>, Senior Teaching Fellow, Medical Program, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Image credits: Shutterstock 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/is-still-water-better-for-you-than-sparkling-water-237125">original article</a>. </div>

Food & Wine

38-year-old message in a bottle washes up on beach

A message in a bottle written almost 40 years ago has been discovered by a four-year-old at a beach in Perth. Meg Prideaux took her son Leo, 4, “looking for treasure” at the beach in their hometown of Lancelin, when he spotted the bottle with a rolled-up note inside. “We brought it home and we waited for my daughter and my husband to come home, but we couldn’t get it open,” she said. “There was a bit of corrosion and a few barnacles had started to grow, so it had been there for a while.” After a bit of trouble, they got the bottle open and unfurled the soggy, but still legible, letter and found it dated from 1985. The message had been written 39 years ago by then-teenagers Joanne Hunter and Louise Pocock, who were 15 when they wrote the note while on holiday. Their note came with a simple request — that anyone who finds the bottle send a return letter to the girls in suburban Perth. With the help of <a href="https://7news.com.au/news/message-in-a-bottle-thrown-into-sea-in-1985-washes-up-on-wa-beach-c-15876207" target="_blank" rel="noopener">7News</a>, Meg and Leo Prideaux were able to track down Joanne Hunter, who is now Joanne Evans and aged 54. “I was like, ‘Oh my god. Is that really that?’ I haven’t thought about that in forever,” Evans said. “We wrote it at night and sealed it with wax and then we actually swam it out into the water because, at first, we threw it from the beach and it kept washing back in, so we swam out the next morning." “My family had a beach house directly across the road and Louise came with my family for the school holidays. She was always full of excitement and had such a great imagination, it was her idea to do it.” Pocock died of leukaemia six years ago but her sister, Sarah Martin, said she would have enjoyed “such a kick” knowing the message had been found. “Oh, she’d be so happy, she really would — especially that a little boy found it as well after 39 years just sitting in the sand,” Martin said. “She was a really great, fun, happy-go-lucky sort of person and really did well in her life, very artistic and creative, and she met a wonderful man and married him and had a beautiful little girl. “As time goes on, you feel like they’re slipping further away from you and then this message is such a wonderful thing that just came out of the blue.” The Prideaux family now plan to meet Evans to return the bottle and the message to its original author some time in the near future. Image credits: 7News / Prideaux family

Family & Pets

Manhunt after stranger pours scalding hot coffee on baby in public park

Queensland Police have released footage of the man they believe burned a baby with a scalding hot drink in a public park. On Wednesday, the unknown man approached the family at Hanlon Park in Brisbane and poured hot coffee on the nine-month-old baby boy. He was rushed to the Queensland Children’s Hospital with burns to his face, upper body and arms, with the burns covering 60 per cent of his body. Queensland Police have now released CCTV footage from the area, showing a man running from the park. He appears approximately 30 to 40 years old, with a proportionate build and tanned skin, and was wearing a black hat, glasses, a shirt and shorts. Anyone who recognises the man has been urged to contact the police with information. An off-duty nurse heard the commotion in the park from the balcony of her apartment, telling <a href="https://7news.com.au/news/footage-of-man-who-burnt-baby-with-hot-drink-at-hanlon-park-in-stones-corner-released-c-15856522" target="_blank" rel="noopener">7News</a> she went outside to investigate when she heard screaming. She said she heard the child’s mother yelling “my baby, my baby”. The nurse rushed down to the park to help the boy, taking him to her nearby apartment where he was placed under a cold shower before paramedics arrived. Locals told 7News the attack was “terrible” and they were shocked it had happened in their community. “It’s really scary when you think that we haven’t got a community that looks after our young and vulnerable,” one woman said. Image credits: Queensland Police

Legal

The eye-watering salaries of The Voice Australia judges revealed

The Voice Australia has revamped the lineup of the judges for the 2024 season, with American music icons Adam Lambert and LeAnn Rimes joining Aussies Guy Sebastian and Kate Miller-Heidke. As the new American talent joins the show, Seven are reportedly paying big buck for the international stars after their salaries were leaked by <a href="https://au.lifestyle.yahoo.com/exclusive-the-voice-australia-coaches-salaries-leaked-amid-pay-row-230921307.html" target="_blank" rel="noopener">Yahoo News</a>. According to the publication, an alleged source claims that Adam and LeAnn "are believed to be receiving between $750,000 and $1.2 million" for the single season of the show. Meanwhile, Kate Miller-Heidke "is believed to be receiving upwards of $500,000" for her first season on the show. Veteran judge Guy Sebastian allegedly started on $750,000 per season in 2019, "but this is believed to now be worth $1 million". These new judges are getting "considerably less" than outgoing coaches Rita Ora and Jason Derulo, Yahoo alleges. According to a production insider, the reason for the switch-up of judges was the star's pay cheques, and a desire from producers to keep costs down. The insider said the program has been wanting a change in judges lineup for a quite some time, adding that salary increases are necessary to keep returning stars on the show and the price tag for the former crop was "too expensive". "The company line was that Jessica, Rita and Jason were all too busy, but I don't think anyone is too busy to pick up these sorts of pay cheques. It certainly did have a lot to do with keeping the costs down." Image credits: Seven

The eye-watering cost of Karl Stefanovic's "highly secret" 50th birthday bash

Karl Stefanovic had a "highly secretive" birthday party in Saint-Tropez. France, according to Women's Day. The Today host, who was in Paris to cover the Olympic games earlier this month, reportedly booked out an entire hotel for his 50th birthday bash. A source claimed that his party cost a staggering $200,000, with A-listers James Packer and Anthony Bell among the guests. "He'd be thinking you only turn 50 once so let's do this properly and go big!" the insider claimed. "Much like the $50,000 he dropped for (wife) Jasmine's 40th earlier this year, and the rumoured $10,000 birthday parties they have hosted for their four-year-old daughter Harper," they continued. "And then there was their $700,000 lavish Mexican nuptials - Karl has never done anything half-baked!" The party was allegedly 1970s themed, with Stefanovic's wife also showing off her new designer dresses. This comes after it was initially reported that Stefanovic was set to cancel his planned 50th birthday bash in Paris. Earlier this year, the Today host was reported to have spent a whopping $50,000 on his wife's lavish birthday celebrations in Noosa, according to the publication. Jasmine's entire look alone was worth an eye-watering $5,575, with her gown from Zimmermann costing $1,950. The party reportedly lasted for about two days, with a "recovery shindig" allegedly worth $10,000 also taking place. A close friend of the couple said at the time that "Karl is an old romantic" and was more than happy to treat his wife to a lavish birthday. Images: Instagram

Money & Banking

40°C in August? A climate expert explains why Australia is ridiculously hot right now

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/andrew-king-103126">Andrew King</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a> It’s winter in Australia, but as you’ve probably noticed, the weather is unusually warm. The top temperatures over large parts of the country this weekend were well above average for this time of year. The outback town of Oodnadatta in South Australia recorded 38.5°C on Friday and 39.4°C on Saturday – about 16°C above average. Both days were well above the state’s previous winter temperature record. In large parts of Australia, the heat is expected to persist into the coming week. A high pressure system is bringing this unusual heat – and it’s hanging around. So temperature records have already fallen and may continue to be broken for some towns in the next few days. It’s no secret the world is warming. In fact, 2024 is shaping up to be <a href="https://www.carbonbrief.org/state-of-the-climate-2024-now-very-likely-to-be-warmest-year-on-record/">the hottest year on record</a>. Climate change is upon us. Historical averages are becoming just that: a thing of the past. That’s why this winter heat is concerning. The warming trend will continue for at least as long as we keep burning fossil fuels and polluting the atmosphere. Remember, this is only August. The heatwaves of spring and summer are only going to be hotter. <figure><iframe src="https://www.youtube.com/embed/GmhMKjxEGQo?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption>Widespread heat forecast for Australia in August, 2024 (Bureau of Meteorology)</figcaption></figure> <h2>Records broken across Australia</h2> The Bureau of Meteorology was expecting many records to be broken over the weekend across several states. On Thursday, bureau meteorologist Angus Hines described: <blockquote> A scorching end to winter, with widespread heat around the country in coming days, including the chance of winter records across multiple states for maximum temperature. </blockquote> The amount of heat plunging into central Australia was particularly unusual, Hines said. On Friday, temperatures across northern South Australia and southern parts of the Northern Territory were as much as 15°C above average. Temperatures continued to soar across northern parts of Western Australia over the weekend, with over 40°C recorded at Fitzroy Crossing on Sunday. It has been 2–12°C above average from Townsville all the way down to Melbourne for several days in a row. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=412&fit=crop&dpr=1 600w, https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=412&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=412&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=518&fit=crop&dpr=1 754w, https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=518&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=518&fit=crop&dpr=3 2262w" alt="Animated maximum temperature anomaly map showing heat building across central Australia" /></a><figcaption>Maximum temperature anomalies from August 19-24, showing heat building across Australia. Bureau of Meteorology, <a class="license" href="http://creativecommons.org/licenses/by/4.0/">CC BY</a></figcaption></figure> Bear in mind, it’s only August. As Hines said, the fire weather season hasn’t yet hit most of Australia – but the current conditions – hot, dry and sometimes windy – are bringing moderate to high fire danger across Australia. It may also bring dusty conditions to central Australia. And for latitudes north of Sydney and Perth, most of the coming week will be warm. <h2>What’s causing the winter warmth?</h2> <a href="http://www.bom.gov.au/australia/charts/synoptic_col.shtml">In recent days</a> a stubborn high pressure system has sat over eastern Australia and the Tasman Sea. It has kept skies clear over much of the continent and brought northerly winds over many areas, transporting warm air to the south. High pressure promotes warm weather – both through clearer skies that bring more sunshine, and by promoting the descent of air which <a href="https://media.bom.gov.au/social/blog/2544/explainer-what-influences-air-temperature/">causes heating</a>. By late August, both the intensity of the sun and the length of the day has increased. So the centre of Australia can really warm up when under the right conditions. High pressure in June can be associated with cooler conditions, because more heat is lost from the surface during those long winter nights. But that’s already less of an issue by late August. This kind of weather setup has occurred in the past. Late-winter or early-spring heat does sometimes occur in Australia. However, this warm spell is exceptional, as highlighted by the broken temperature records across the country. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=450&fit=crop&dpr=1 600w, https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=450&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=450&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=566&fit=crop&dpr=1 754w, https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=566&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=566&fit=crop&dpr=3 2262w" alt="Graph of August Australian-average temperatures increasing since 1910" /></a><figcaption>August temperatures have been rising over the past century. Bureau of Meteorology</figcaption></figure> <h2>Feeling the heat</h2> The consequences of humanity’s continued greenhouse gas emissions are clear. Australia’s winters are getting warmer overall. And winter “heatwaves” are becoming warmer. Australia’s three warmest Augusts on record have all occurred since 2000 – and <a href="https://theconversation.com/why-is-australia-having-such-a-warm-winter-a-climate-expert-explains-210693">last August was the second-warmest since 1910</a>. When the right weather conditions occur for winter warmth across Australia, the temperatures are higher than a century ago. The warmth we are experiencing now comes off the back of <a href="https://theconversation.com/earth-has-just-ended-a-13-month-streak-of-record-heat-heres-what-to-expect-next-236655">a recent run of global temperature records</a> and <a href="https://theconversation.com/extreme-heat-is-breaking-global-records-why-this-isnt-just-summer-and-what-climate-change-has-to-do-with-it-234249">extreme heat events across the Northern Hemisphere</a>. This warm spell is set to continue, with temperatures above 30°C forecast from Wednesday through to Sunday in Brisbane. The outlook for spring points to continued <a href="http://www.bom.gov.au/climate/outlooks/#/temperature/maximum/median/seasonal/0">above-normal temperatures</a> across the continent, but as always we will likely see both warm and cold spells at times. Such winter warmth is exceptional and already breaking records. Climate change is already increasing the frequency and intensity of this kind of winter heat – and future warm spells will be hotter still, if humanity’s greenhouse gas emissions continue.<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/237398/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/andrew-king-103126">Andrew King</a>, Senior Lecturer in Climate Science, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a> Image credits: Shutterstock 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/40-c-in-august-a-climate-expert-explains-why-australia-is-ridiculously-hot-right-now-237398">original article</a>. </div>

Domestic Travel

Kyle Sandilands finally reveals new eye-watering salary

Kyle Sandilands has stunned listeners after candidly revealing his eye-watering salary live on air. Much speculation has swirled about the KIIS FM radio hosts' salaries after Kyle and Jackie O signed a new 10-year contract with the network, which was rumoured to cost $100 million. This figure would mean that Kyle and Jackie O would see an annual salary of $10 million, but Kyle revealed they are actually getting paid more than that. “I can’t live with the lie, it’s underreported," Kyle admitted on Friday morning. "It’s actually about another $50 million each,” he said, which means the pair will take home $15 million a year each. As Jackie protested at Kyle revealing their personal negotiations, Kyle continued, “I’m just saying, let’s cut through the bulls**t. And we get that because we’re good [at radio].” The new contract, which is said to be the biggest deal in Australian media history, will take The Kyle and Jackie O Show hosts to December 2034. The duo also have a clause in their contract that allows them to broadcast the show “anywhere on earth” at the drop of a hat. After revealing his astonishing salary on air, Kyle and his team began discussing the salaries of other popular radio stars in Australia. The show’s reporter Cooper Johns claimed that Hamish Blake and Andy Lee both make $4 million a year, while Brendan 'Fev' Fevola makes $1.2 million a year for his show on Fox FM in Melbourne. Meanwhile, 2GB’s Sydney breakfast host Ray Hadley is believed to be on a $3.5 million salary, WSFM’s Amanda Keller is reportedly on $2.5 million, and Carrie Bickmore is said to be making $1.5 million a year. Image credits: KIIS FM

Money & Banking

Just 15 centimetres of water can float a car – but we are failing to educate drivers about the dangers of floodwaters

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/amy-peden-1136424">Amy Peden</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> and <a href="https://theconversation.com/profiles/kyra-hamilton-331594">Kyra Hamilton</a>, <a href="https://theconversation.com/institutions/griffith-university-828">Griffith University</a> Every year in Australia, people driving into floodwaters drown and many more are <a href="https://www.ses.nsw.gov.au/disaster-tabs-header/flood/">rescued</a>. Do you know what to do when there’s water on the road? We searched all state and territory learner and driver handbooks for information about floodwaters, including signage. Our findings, published in the <a href="https://www.sciencedirect.com/science/article/pii/S0022437524000860?via%3Dihub">Journal of Safety Research</a>, are disturbing. Across half of Australia’s states and territories, the driver handbook ignores flooding. That’s a missed opportunity, considering the handbook contains road rules and provides advice on how to navigate safely. While some states fail to provide any flood-related information, others give detailed practical guidance. Only the New South Wales handbook includes explanation of the meaning and purpose of flood signage. This is despite almost all states and territories experiencing vehicle-related flood <a href="https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfr3.12616">deaths</a>, including <a href="https://currents.plos.org/disasters/article/causal-pathways-of-flood-related-river-drowning-deaths-in-australia/">drowning</a>, between 2001 and 2017. It’s a major problem that is only going to get worse as the climate changes. So our research shows driver education needs to come up to speed, fast. <h2>Why do people drive into floodwaters?</h2> Our previous <a href="https://www.sciencedirect.com/science/article/abs/pii/S2212420918301869">research</a> revealed motorists can feel compelled to drive into floodwaters for a range of reasons. These include time pressures such as being late for work or school, or needing to get home to family or pets. Sometimes they feel pressured by their passengers, or motorists behind them on the road, urging them to cross. People also report having been encouraged or instructed as learners to drive into floodwaters. Past experience as a passenger also influences a <a href="https://www.sciencedirect.com/science/article/pii/S1369847823000475">learner driver’s</a> future willingness to drive into floodwaters. So the views of significant others, such as their supervising driver, strongly influence decisions around driving into floodwaters. <figure><iframe src="https://www.youtube.com/embed/ZtlXpDBjU1Q?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption>Avoid driving into floodwaters, for life’s sake.</figcaption></figure> <h2>What we did and what we found</h2> We assessed all publicly available, government-issued learner and driver handbooks (12 documents) across all six Australian states and two territories. We also looked for flood-related signage. We used a method for reviewing online material through a systematic search including in-document key words and imagery. Four jurisdictions provided no information on flooding in the handbook. In the ACT, South Australia, Tasmania and Victoria, drivers need to look elsewhere for information on floodwaters and driving safety. Only one jurisdiction provided information on flood signage such as depth markers and “road subject to flooding”. Hats off to the <a href="https://www.nsw.gov.au/sites/default/files/2022-11/Road-User-Handbook-English.pdf">NSW Road User Handbook</a>, which warns: <blockquote> Floodwater is extremely dangerous. Find another way or wait until the road is clear. It’s safer to turn around than to drive in floodwater. </blockquote> For the states and territories that did provide information on floodwaters in the handbook, the content varied. NSW, Queensland and the Northern Territory warned against entering floodwaters in a vehicle. They highlighted the dangers and financial penalties associated with driving on closed roads. In the NT and Western Australia, handbooks provided practical information on when and how to cross floodwaters safely, such as how to gauge safe water depth based on vehicle size, and to avoid fast-flowing water. Although well-intentioned, judgements around what constitutes fast-flowing water are subjective and hard for any driver to assess, let alone learner drivers. Even drivers of larger vehicles such as four-wheel drives are regularly involved in flood-related <a href="https://currents.plos.org/disasters/article/causal-pathways-of-flood-related-river-drowning-deaths-in-australia/">vehicle drowning fatalities</a>. Just <a href="https://www.ses.vic.gov.au/news-and-media/campaigns/15-to-float">45cm</a> of water can float a large 4WD, and considerably less for smaller vehicles. <figure><iframe src="https://www.youtube.com/embed/t4ilUbMXZAQ?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption>A small car can float in just 15cm of water.</figcaption></figure> Handbooks represent valuable sources of safety information, particularly for new drivers who must learn important road rules to progress from one licence to another. Such graduated driver licensing schemes reduce road traffic injury, particularly among <a href="https://www.sciencedirect.com/science/article/pii/S0022437523000385">young people</a>. However, many of these handbooks fail to provide consistent, practical evidence-based information about flooding. There is an opportunity here to support safer driving behaviours. <h2>Safety tips for all drivers</h2> We encourage drivers to follow these safety tips: <ul> <li>avoid driving into floodwaters</li> <li>identify alternative routes, so you have a <a href="https://theconversation.com/when-roads-become-rivers-forming-a-plan-b-can-stop-people-driving-into-floodwaters-183036">plan B</a></li> <li>familiarise yourself, and any learner drivers in the household or under your care, with the meaning and purpose of flood signage</li> <li>understand the legal consequences of crossing a road closed sign</li> <li>discuss the dangers of driving into floodwaters with learner drivers and help them formulate their own plan B</li> <li>model safe driving for all passengers, including children.</li> </ul> <h2>Time to lift our game</h2> Driving into floodwaters remains the main cause of <a href="https://currents.plos.org/disasters/article/causal-pathways-of-flood-related-river-drowning-deaths-in-australia/">flood-related drowning</a> in Australia. For our emergency service personnel, driver behaviour, including people ignoring road closed signs, <a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/hpja.181">significantly complicates</a> the already dangerous act of performing a flood rescue. Extreme weather and flooding are likely to become more frequent and intense in the future. That means the chance of being faced with a flooded road is growing. So information about driving during floods is vital for all, from the newly licensed to the experienced driver. We hope our research will encourage all states and territories to include provide practical, evidence-based advice on floods in driver handbooks as soon as possible.<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/233116/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/amy-peden-1136424">Amy Peden</a>, NHMRC Research Fellow, School of Population Health & co-founder UNSW Beach Safety Research Group, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> and <a href="https://theconversation.com/profiles/kyra-hamilton-331594">Kyra Hamilton</a>, Associate Professor in Applied Psychology, <a href="https://theconversation.com/institutions/griffith-university-828">Griffith University</a> Image credits: Shutterstock 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/just-15-centimetres-of-water-can-float-a-car-but-we-are-failing-to-educate-drivers-about-the-dangers-of-floodwaters-233116">original article</a>. </div>

Travel Trouble

Why doesn’t water help with spicy food? What about milk or beer?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/daniel-eldridge-1494633">Daniel Eldridge</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> Spicy foods taste spicy because they contain a family of compounds called capsaicinoids. Capsaicin is the major culprit. It’s found in chillies, jalapeños, cayenne pepper, and is even the active ingredient in <a href="https://pubmed.ncbi.nlm.nih.gov/31334983/">pepper spray</a>. Capsaicin doesn’t actually physically heat up your mouth. The burning sensation comes from receptors in the mouth reacting to capsaicin and sending a signal to the brain that something is very hot. That’s why the “hot” chilli sensation feels so real – we even respond by sweating. To alleviate the heat, you need to remove the capsaicin from your mouth. So why doesn’t drinking water help make that spicy feeling go away? And what would work better instead? <h2>Water-loving and water-hating molecules</h2> To help us choose what might wash the capsaicin away most effectively, it’s helpful to know that capsaicin is a hydrophobic molecule. That means it hates being in contact with water and will not easily mix with it. Look what happens when you try to mix hydrophobic sand with water. <figure><iframe src="https://www.youtube.com/embed/H8cj9CpHW7w?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> On the other hand, hydrophilic molecules love water and are very happy to mix with it. You’ve likely seen this before. You can easily dissolve hydrophilic sugar in water, but it’s hard to wash away hydrophobic oils from your pan using tap water alone. If you try to wash hydrophobic capsaicin away with water, it won’t be very effective, because hydrophilic and hydrophobic substances don’t mix. Going for iced water will be even less effective, as hydrophobic capsaicin is even less soluble in water at lower temperatures. You may get a temporary sense of relief while the cold liquid is in your mouth, but as soon as you swallow it, you’ll be back where you started. Instead, a good choice would be to consume something that is also hydrophobic. This is because of an old-but-true adage in chemistry that “like dissolves like”. The idea is that generally, hydrophobic substances will not dissolve in something hydrophilic – like water – but will dissolve in something that is also hydrophobic, as this video shows: <figure><iframe src="https://www.youtube.com/embed/s5yfs-Pr_y8?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <h2>My mouth is on fire. What should I drink instead of water?</h2> A swig of oil would likely be effective, but is perhaps not so palatable. Milk makes for an ideal choice for two reasons. The first is that milk contains hydrophobic fats, which the capsaicin will more easily dissolve in, allowing it to be washed away. The second is that dairy products contain a protein called casein. Casein is an emulsifier, a substance that helps oils and water mix, as in this video: <figure><iframe src="https://www.youtube.com/embed/S4XeQhZRLDE?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> Casein plays a large role in keeping the fat mixed throughout your glass of milk, and it also has a strong affinity for capsaicin. It will readily wrap up and encapsulate capsaicin molecules and assist in carrying them away from the receptor. This relieves the <a href="https://pubmed.ncbi.nlm.nih.gov/36510373/">burning sensation</a>. <h2>OK but I hate drinking milk. What else can I try?</h2> What about raita? This dish, commonly served with Indian curries, is made primarily from yoghurt. So aside from being its own culinary experience, raita is rich in fats, and therefore contains plenty of hydrophobic material. It also contains casein, which will again help lock up and remove the capsaicin. Ice cream would also work, as it contains both casein and large amounts of hydrophobic substances. Some studies have also shown that consuming <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9328490/">drinks with large amounts of sugar</a> can relieve spiciness. What about reaching for that ice cold beer? This is commonly suggested as a suitable approach to stop the burning. At first glance, this may seem a good idea because capsaicin is highly soluble in alcohol. However, most beers only contain between 4–6% alcohol. The bulk of the liquid in beer is water, which is hydrophilic and cannot wash away capsaicin. The small amount of alcohol in your beer would make it slightly more effective, but not to any great degree. Your curry and beer may taste great together, but that’s likely the only benefit. In truth, an alcoholic beverage is not going to help much unless you go for something with a much, much higher alcohol content, which comes with its own problems.<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/226624/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/daniel-eldridge-1494633">Daniel Eldridge</a>, Senior Lecturer in Chemistry, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> Image credits: Shutterstock 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-doesnt-water-help-with-spicy-food-what-about-milk-or-beer-226624">original article</a>. </div>

Food & Wine

"Why is the water so salty?" and other priceless questions from clueless tourists

In the heart of the stunning intersection where the Daintree Rainforest kisses the Great Barrier Reef, you’ll find <a href="https://www.tripadvisor.com.au/Attraction_Review-g499639-d1045292-Reviews-Ocean_Safari-Cape_Tribulation_Daintree_Region_Queensland.html" target="_blank" rel="noopener">Ocean Safari</a> – a top-notch, eco-certified tour company. Brooke Nikola, one of their delightful tour guides, has been guiding wide-eyed adventurers through this paradise for years. With thousands of tourists coming from all corners of the globe, she’s accumulated a treasure trove of amusing anecdotes that could rival the size of the reef itself. Let’s dive right into the deep end with some classic moments <a href="https://www.news.com.au/travel/australian-holidays/queensland/hilarious-comments-from-clueless-tourists/news-story/ad90a419cbf4fed9d454d3edef0cb096" target="_blank" rel="noopener">per news.com.au</a>. One sunny day, while marvelling at the endless blue expanse, a curious tourist asked Brooke, “Why does the water taste so salty?” “Well, it’s the ocean,” Brooke gently reminded them. Ah, the wonders of seawater – still a mystery to some. Then there was the time aboard the Ocean Safari vessel, cruising serenely over the waves, when a perplexed guest inquired, “How far above sea level are we?” And who could forget the would-be scientist who attempted to bottle the stunning blue ocean water, only to be baffled when it turned out clear. We can only imagine Brooke explaining the tricky science of light refraction and how the ocean's mesmerising blue doesn't quite fit into a bottle. No doubt their holiday turned into an impromptu science lesson. The complaints Brooke hears are just as priceless. One guest, dripping after a snorkelling session, grumbled, “Ugh, snorkelling makes me so wet.” Then there was the revelation about the rainforest. As rain drizzled through the lush canopy, a bewildered tourist remarked, “It’s so rainy in the rainforest!” Who knew that rain would be part of the rainforest experience? Certainly not that guest! Geography can be tricky, especially in a place as uniquely named as Cape Tribulation. As tourists boarded the Ocean Safari vessel from Cape Tribulation beach, one asked where the Daintree Rainforest was – oblivious to the verdant scenery they had driven through for the past hour. Brooke had to kindly point out that they had been in it this whole time. Another classic came from a guest who thought Cape Tribulation was an island. They earnestly asked, “So, how big is the whole island?” To which Brooke replied, “It’s pretty big. So big, in fact, it’s known as Australia!” Through all of these delightful moments, no doubt Brooke remained a fountain of patience and good humour. So, next time you find yourself at Cape Tribulation, remember to bring your sense of wonder – and a good laugh. Because as Brooke can tell you, the Great Barrier Reef is full of surprises, both above and below the water! Images: Ocean Safari / Instagram

Travel Trouble

Belated tributes for iconic Sylvania Waters star

One of Australia's first ever reality TV star has died, but her death went unreported for over a year. Noeline Donaher, the star of Sylvania Waters, died on May 2023, with Australian pop culture producer Matt Fulton bringing attention to her death by sharing a Facebook post written by Donaher’s son, Mick, on X, formerly known as Twitter. “Holy c*** — Noeline Donaher DID pass away May 2023, and there wasn’t a blip in any news/media,” Fulton wrote on X. “How did we miss this news? I had to do a deep dive to find the info. It really was not reported anywhere," the pop culture producer added. The Facebook post announcing her death was shared on May 30 2023 and read: “Dad has asked me to share with you all the sad news that Noeline Donaher, his partner of over 40yrs, recently passed away." “Noeline absolutely loved Appendix J racing ... Together they raced everything from a couple of Valiants to a Lotus Cortina ... More importantly she made lots of great friends over the years and had many laughs/memorable times at tracks all around Australia, including Tasmania and WA! “I’m just with (her husband) Laurie today and going through some old pics on the wall and in albums so thought I’d share a few of them with you all and say THANKS, on their behalf, to the Appendix J Old Boys for many years of fun, friendship and great memories.” Sylvania Waters which aired for 12 episodes in 1992 caused a lot of controversy at the time, because of its unique concept. The show followed the Donahers as they went about their lives in their home in the titular south Sydney suburb of Sylvania Waters. At the time, some critics and viewers criticised how the reality TV show depicted the family, saying that it showed all Aussies – as “materialistic, argumentative and heavy-drinking”, according to the SMH. When the series aired in the UK, The Daily Telegraph Mirror dubbed the show “a vicious putdown tailor-made for British audiences” and many viewers were shocked at the antics of the Australian family. Viewers of the show were stunned to learn that her death went unreported, and many shared their condolences on X. “Vale the original Kath Day-Knight,” wrote one follower, referring to Sylvania Waters influence on another beloved show, Kath and Kim. “One of the world’s first reality TV series, and one that put Sylvania Waters on the map," added another. “Get me a bourbon, Laurie,” wrote a third, citing one of her iconic lines. “Sad. I grew up around the corner and went to school with their kids,” added a fourth. Images: X

Caring

Cancer-causing chemicals found in Aussie tap water sparks safety concerns

A landmark ruling in the US has sparked safety concerns over Australian tap water, with many wondering if it is safe to drink. After the US tightened their regulations around drinking tap water, cutting the maximum level of cancer-causing so-called “forever chemicals” allowed, experts have urged Australia to do the same. Earlier this year, the US Environmental Protection Agency found there was “no safe level of exposure” of the chemicals perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) in drinking water and they were likely to cause cancer. The toxic substances have also been linked to kidney and liver disease, thyroid dysregulation, reproductive problems, and developmental problems. According to a federally funded University of Queensland study published in 2011, Australia permits per-and-poly-fluoroalkyl (PFAS) substances at levels up to 140 times higher than those allowed in the US. Health Minister Mark Butler has asked key political players, including Chief Medical Officer Paul Kelly, for an urgent briefing following the US developments. The National Health and Medical Research Council, which shapes the nation’s water rules, is reviewing its guidelines relating to the chemicals, and that could be expedited ahead of its 2025 end date. “Australian drinking water is regularly monitored for the presence of chemicals, including PFAS, to ensure those are within the limits assessed as safe by Australian regulators,” a spokesperson for the Health Minister said. “This independent review will consider recent guidance and reviews from international and national jurisdictions and determine whether they are suitable to adopt or adapt for Australia.” Nicholas Chartres, a senior research fellow at the University of Sydney, called for a precautionary approach and immediate widespread testing of the nation’s water supplies. “The government needs to take action. They need to be testing the water (and) it will come at a cost,” he said. Image credits: Shutterstock

Travel Trouble

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

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/duane-mellor-136502">Duane Mellor</a>, <a href="https://theconversation.com/institutions/aston-university-1107">Aston University</a> 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. But while we all might wish it was this easy to lose weight, unfortunately there’s little evidence to back up these claims. <h2>Myth 1: water helps burn calories</h2> 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%. 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. <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. 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. 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). <h2>Myth 2: water with meals reduces appetite</h2> 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. 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. But for people looking to lose weight, the science is a little less straightforward. <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. 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. 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. 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>. 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. <h2>Just water isn’t enough</h2> 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. 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. 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. 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. 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. 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.<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" /> <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> Image credits: Shutterstock 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>. </div>

Body

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

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/adam-taylor-283950">Adam Taylor</a>, <a href="https://theconversation.com/institutions/lancaster-university-1176">Lancaster University</a> 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&utm_medium=social&utm_content=instagram-bio-link&client_service_id=31196&client_service_name=glamour&service_user_id=1.78e+16&supported_service_name=instagram_publishing&utm_brand=glm&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.” Shields said she found herself walking around outside for “no reason at all”, wondering: “Why am I out here?” <blockquote> 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. </blockquote> Shields added that she was “frothing at the mouth, totally blue, trying to swallow my tongue”. 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. 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. <h2>Worried about hydration levels? Check your urine</h2> 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. 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. <figure><iframe src="https://www.youtube.com/embed/Qghf7Y9ILAs?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> 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. 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. 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. <h2>How much is too much?</h2> 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. 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&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”. 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. <figure><iframe src="https://www.youtube.com/embed/ReQew2zcN7c?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> 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. 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. 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. 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. 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. 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.<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" /> <a href="https://theconversation.com/profiles/adam-taylor-283950">Adam Taylor</a>, Professor and Director of the Clinical Anatomy Learning Centre, <a href="https://theconversation.com/institutions/lancaster-university-1176">Lancaster University</a> Image credits: Shutterstock 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>. </div>

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