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These 12 things can reduce your dementia risk – but many Australians don’t know them all

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/joyce-siette-1377445">Joyce Siette</a>, <a href="https://theconversation.com/institutions/western-sydney-university-1092">Western Sydney University</a> and <a href="https://theconversation.com/profiles/laura-dodds-1378067">Laura Dodds</a>, <a href="https://theconversation.com/institutions/western-sydney-university-1092">Western Sydney University</a></em></p> <p>Dementia is a <a href="https://www.abs.gov.au/statistics/health/causes-death/provisional-mortality-statistics/jan-may-2022">leading</a> cause of death in Australia.</p> <p>Although dementia mainly affects older people, it is an avoidable part of ageing. In fact, we all have the power to reduce our risk of developing dementia, no matter your age.</p> <p>Research shows your risk of developing dementia could be <a href="https://www.thelancet.com/article/S0140-6736(20)30367-6/fulltext">reduced by up to 40%</a> (and even higher if you live in a <a href="https://www.thelancet.com/journals/langlo/article/PIIS2214-109X(19)30074-9/fulltext">low or middle-income country</a>) by addressing lifestyle factors such as healthy diet, exercise and alcohol consumption.</p> <p>But the first step to reducing population-wide dementia risk is to understand how well people understand the risk factors and the barriers they may face to making lifestyle changes.</p> <p>Our new <a href="https://www.mdpi.com/2673-9259/2/4/21/htm">paper</a>, published this week in the <a href="https://www.mdpi.com/2673-9259/2/4/21/htm">Journal of Ageing and Longevity</a>, found most older people are aware that dementia is a modifiable condition and that they have the power to change their dementia risk.</p> <p>We also found the key barrier to making brain healthy lifestyle choices was a lack of knowledge, which suggests a public awareness campaign is urgently needed.</p> <h2>What we did</h2> <p>We began by <a href="https://www.mdpi.com/2673-9259/2/4/21/htm">reviewing</a> the published research to identify 12 factors shown to reduce dementia risk. We surveyed 834 older Australians about their awareness of the 12 factors, which were:</p> <ol> <li>having a mentally active lifestyle</li> <li>doing physical activity</li> <li>having a healthy diet</li> <li>having strong mental health</li> <li>not smoking</li> <li>not consuming alcohol</li> <li>controlling high blood pressure</li> <li>maintaining a healthy weight</li> <li>managing high cholesterol</li> <li>preventing heart disease</li> <li>not having kidney disease</li> <li>not having diabetes</li> </ol> <p><a href="https://www.thelancet.com/article/S0140-6736(20)30367-6/fulltext">The Lancet</a> subsequently published its own list of factors that help reduce dementia risk, which covered much the same territory (but included a few others, such as reducing air pollution, treating hearing impairment and being socially engaged).</p> <p>Of course, there is no way to cut your dementia risk to zero. Some people do all the “right” things and still get dementia. But there is <a href="https://www.thelancet.com/article/S0140-6736(20)30367-6/fulltext">good evidence</a> managing lifestyle factors help make it <em>less likely</em> you will get dementia over your lifetime.</p> <p>Our study shows many older Australians are quite aware, with over 75% able to correctly identify more than four of the factors in our list of 12.</p> <p>However, few were able to name the less well-known risk factors, such as preventing heart disease and health conditions like kidney disease.</p> <p>The good news is that close to half of the sample correctly identified more than six of the 12 protective factors, with mentally active lifestyle, physical activity and healthy diet in the top three spots.</p> <h2>Two key issues</h2> <p>Two things stood out as strongly linked with the ability to identify factors influencing dementia risk.</p> <p>Education was key. People who received more than 12 years of formal schooling were more likely to agree that dementia was a modifiable condition. We are first exposed to health management in our school years and thus more likely to form healthier habits.</p> <p>Age was the other key factor. Younger respondents (less than 75 years old) were able to accurately identify more protective factors compared to older respondents. This is why health promotion initiatives and public education efforts about dementia are vital (such as Dementia Awareness Month and <a href="https://www.memorywalk.com.au/">Memory, Walk and Jog initiatives</a>).</p> <h2>How can these findings be used in practice?</h2> <p>Our findings suggest we need to target education across the different age groups, from children to older Australians.</p> <p>This could involve a <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/ajag.13049">whole system approach</a>, from programs targeted at <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5858574/#:%7E:text=Family%20Coaching%20has%20specific%20goals,to%20problem%20solve%20challenging%20situations.">families</a>, to educational sessions for school-aged children, to involving GPs in awareness promotion.</p> <p>We also need to tackle barriers that hinder dementia risk reduction. This means doing activities that motivate you, finding programs that suit your needs and schedule, and are accessible.</p> <h2>What does this mean for you?</h2> <p>Reducing your dementia risk means recognising change starts with you.</p> <p>We are all familiar with the everyday challenges that stop us from starting an exercise program or sticking to a meal plan.</p> <p>There are simple and easy changes we can begin with. Our team has developed a program that can help. We are offering limited <a href="https://www.brainbootcamp.com.au/">free brain health boxes</a>, which include information resources and physical items such as a pedometer. These boxes aim to help rural Australians aged 55 years and over to adopt lifestyle changes that support healthy brain ageing. If you’re interested in signing up, visit our <a href="https://www.brainbootcamp.com.au">website</a>.</p> <p>Now is the time to think about your brain health. Let’s start now.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/191504/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/joyce-siette-1377445">Joyce Siette</a>, Research Theme Fellow, <a href="https://theconversation.com/institutions/western-sydney-university-1092">Western Sydney University</a> and <a href="https://theconversation.com/profiles/laura-dodds-1378067">Laura Dodds</a>, PhD Candidate, <a href="https://theconversation.com/institutions/western-sydney-university-1092">Western Sydney University</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/these-12-things-can-reduce-your-dementia-risk-but-many-australians-dont-know-them-all-191504">original article</a>.</em></p> </div>

Mind

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We tend to underestimate our future expenses – here’s one way to prevent that

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/ray-charles-chuck-howard-1361224">Ray Charles "Chuck" Howard</a>, <a href="https://theconversation.com/institutions/texas-aandm-university-1672">Texas A&amp;M University</a>; <a href="https://theconversation.com/profiles/abigail-sussman-227057">Abigail Sussman</a>, <a href="https://theconversation.com/institutions/university-of-chicago-952">University of Chicago</a>; <a href="https://theconversation.com/profiles/david-j-hardisty-753777">David J. Hardisty</a>, <a href="https://theconversation.com/institutions/university-of-british-columbia-946">University of British Columbia</a>, and <a href="https://theconversation.com/profiles/marcel-lukas-1236384">Marcel Lukas</a>, <a href="https://theconversation.com/institutions/university-of-st-andrews-1280">University of St Andrews</a></em></p> <h2>The big idea</h2> <p>When asked to estimate how much money they would spend in the future, people underpredicted the total amount by more than C$400 per month. However, when prompted to think about unexpected spending in addition to typical expenses, people made much more accurate predictions.</p> <p>These are the main findings of a series of <a href="https://doi.org/10.1177%2F00222437211068025">studies and experiments that we conducted</a> and which have just been published in the <a href="https://journals.sagepub.com/home/mrj">Journal of Marketing Research</a>.</p> <p>In our first study, we began by asking 187 members of a Canadian credit union to predict their weekly spending for the next five weeks. Then, at the end of each week, we asked them how much they actually spent.</p> <p>For the first four weeks, people underpredicted their weekly spending by about $100 per week or $400 for the month.</p> <p>In the study’s fifth and final week, we ran an experiment to see if we could improve people’s prediction accuracy.</p> <p>Specifically, we randomly assigned participants to one of two groups. In group one, participants estimated their spending for the next week just as they had done in previous weeks. These folks once again significantly underpredicted their spending.</p> <p>In group two, participants were asked to think of three reasons why their spending for the next week might be different than usual before making their estimate. This led them to make higher and much more accurate predictions – coming within just $7 of what they actually spent.</p> <p>Importantly, participants in each group spent roughly the same amount of money that week, on average. The only difference between the two groups was whether they accurately predicted that amount.</p> <p><iframe id="WlDv3" class="tc-infographic-datawrapper" style="border: 0;" src="https://datawrapper.dwcdn.net/WlDv3/3/" width="100%" height="400px" frameborder="0" scrolling="no"></iframe></p> <p>Next, we conducted nine experiments to better understand why people underpredict their spending and whether being prompted to think of unusual expenses helps improve accuracy. In all, over 5,800 people participated in these experiments, including a representative sample of U.S. residents.</p> <p>These experiments revealed two important insights.</p> <p>First, people primarily base their spending predictions on typical expenses like groceries, gasoline and rent. They usually fail to account for irregular – though still common – expenses like car repairs, last-minute concert tickets or one-off health care bills. This is what leads to underprediction.</p> <p>Second, prompting people to think of irregular expenses in addition to typical expenses helps them to make more accurate spending predictions. In our studies, people did not factor in atypical expenses unless we asked them to do so.</p> <h2>Why it matters</h2> <p>Helping people improve the accuracy of their spending predictions could help them improve their financial well-being.</p> <p>Underpredicting expenses can be costly. For example, 12 million Americans <a href="https://www.pewtrusts.org/en/research-and-analysis/reports/2012/07/19/who-borrows-where-they-borrow-and-why">borrow a total of more than $7 billion</a> in payday loans each year because they can’t meet their monthly expenses. These loans typically have extremely high interest rates – <a href="https://www.pewtrusts.org/en/research-and-analysis/data-visualizations/2022/how-well-does-your-state-protect-payday-loan-borrowers">more than 250% in some states</a>.</p> <p>Payday loans also come due in full so quickly that around three in four borrowers <a href="https://www.pewtrusts.org/en/research-and-analysis/reports/2012/07/19/who-borrows-where-they-borrow-and-why">end up borrowing again</a> to pay off the original loan.</p> <p>If consumers could better anticipate how much money they will spend in the future, it might help motivate them to spend less and save more in the present.</p> <p>In fact, one of our studies shows that our suggested prediction strategy <a href="https://doi.org/10.1177/0022243721106802">not only boosted spending estimates</a>, it also increased intentions to save.</p> <h2>What’s next</h2> <p>Members of our research team are currently investigating if, when and why underpredicting one’s expenses may be beneficial. For example, if a person sets an optimistically low budget and actively tracks their spending against it, does that help them reduce their spending?</p> <p>We are also investigating whether people who work in the gig economy show a corresponding tendency to mispredict their future income.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/189100/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/ray-charles-chuck-howard-1361224">Ray Charles "Chuck" Howard</a>, Assistant Professor of Marketing, <a href="https://theconversation.com/institutions/texas-aandm-university-1672">Texas A&amp;M University</a>; <a href="https://theconversation.com/profiles/abigail-sussman-227057">Abigail Sussman</a>, Professor of Marketing, <a href="https://theconversation.com/institutions/university-of-chicago-952">University of Chicago</a>; <a href="https://theconversation.com/profiles/david-j-hardisty-753777">David J. Hardisty</a>, Assistant Professor of Marketing &amp; Behavioral Science, <a href="https://theconversation.com/institutions/university-of-british-columbia-946">University of British Columbia</a>, and <a href="https://theconversation.com/profiles/marcel-lukas-1236384">Marcel Lukas</a>, Lecturer in Banking and Finance, <a href="https://theconversation.com/institutions/university-of-st-andrews-1280">University of St Andrews</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/we-tend-to-underestimate-our-future-expenses-heres-one-way-to-prevent-that-189100">original article</a>.</em></p> </div>

Money & Banking

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"Force of nature": Tributes flow for Shannen Doherty

<p>Shannen Doherty has passed away aged 53. </p> <p>The beloved actress, known for her roles on <em>Little House on the Prairie</em>, <em>Charmed</em> and <em>90210</em>, died over the weekend following a nine-year battle with breast cancer. </p> <p>Doherty's death was confirmed by her publicist, Leslie Sloane, who said in a statement: "It is with a heavy heart that I confirm the passing of actress Shannen Doherty. On Saturday, July 13, she lost her battle with cancer after many years of fighting the disease."</p> <p>"The devoted daughter, sister, aunt and friend was surrounded by her loved ones as well as her dog, Bowie. The family asks for their privacy at this time so they can grieve in peace."</p> <p>Tributes have flowed in for Doherty from friends, co-stars and loved ones, who have remembered her as a "force of nature". </p> <p>"Shannen Doherty had the heart of a lion," fellow<em> Charmed </em>co-star Rose McGowan wrote in a tribute shared to Instagram. </p> <p>"Passion for craft is often mislabelled as trouble. Shannen was passion," McGowan continued.</p> <p>"I met her in the 90s and was awed. Getting to really know her later in life, a beautiful gift. This woman fought to live," McGowan added, before praising Doherty's work ethic which was "inspiring to the end".</p> <p>"Shannen's great love for directing, for acting, Holly [Marie Combs], her friends, her parents, dog and her beloved fans was legendary."</p> <p>"Our lives had been intertwined in a unique way. We laughed at dark forces who wanted us to hate each other, instead we chose love and respect. A soft-hearted badass as there ever was. A force of energy that will live forever in hearts," McGowan wrote. </p> <p>"Rest now warrior, we will never forget you dear sister."</p> <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-permalink="https://www.instagram.com/reel/C9aLxGVvLH_/?utm_source=ig_embed&utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/reel/C9aLxGVvLH_/?utm_source=ig_embed&utm_campaign=loading" target="_blank" rel="noopener">A post shared by Rose McGowan (@rosemcgowan)</a></p> </div> </blockquote> <p>Fellow Charmed co-star Alyssa Milano - who Doherty had a complicated relationship with - also paid tribute to her via a statement shared with<em> People</em>. </p> <p>"It's no secret that Shannen and I had a complicated relationship, but at its core was someone I deeply respected and was in awe of," Milano wrote.</p> <p>"She was a talented actress, beloved by many and the world is less without her. My condolences to all who loved her," she concluded.</p> <p>Meanwhile, actress Olivia Munn, who bonded with Doherty over their shared breast cancer battle, shared a lengthy tribute to her Instagram story. </p> <p>"I am absolutely heartbroken over the passing of Shannen Doherty. When I was first diagnosed with breast cancer I remembered how she bravely let the world into her journey and reached out to her," Munn wrote.</p> <p>"We became instant friends – which I honestly couldn't comprehend at times because watching her on 90210 was everything to me when I was 10."</p> <p>"Looking back on the last text she sent me just a couple months ago, she asked how I was doing and if she could do anything for me.... True to form, Shannen was offering her support even though she was in the final stages of fighting this horrific disease," Munn continued.</p> <p>"Cancer is really f---ing scary and Shannen faced it with such dignity, strength and grace.</p> <p>"I'm sending all my love to her mother who was her best friend, hero and champion every step of the way. Fly so high, my friend 💔💔💔💔".</p> <p>Doherty's <em>Beverly Hills</em> and <em>90210 </em>co-star Jason Priestly described her as a  "force of nature" in an Instagram post. </p> <p>"I will miss her," he wrote.</p> <p>"Sending love and light to her family in this dark time."</p> <p>"Shocked and saddened by news of Shannen Doherty's death," Carol Potter, who played her on-screen mum in <em>90210</em>, wrote on Instagram.</p> <p>"What a journey she has been on! Gone too soon. Throughout, she stayed true to herself and gave us an example of courage and perseverance in facing her own death. May she rest in peace.❤️🙏"</p> <p><em>Images: Instagram</em></p> <p> </p>

Caring

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Walking can prevent low back pain, a new study shows

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/tash-pocovi-1293184">Tash Pocovi</a>, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a>; <a href="https://theconversation.com/profiles/christine-lin-346821">Christine Lin</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>; <a href="https://theconversation.com/profiles/mark-hancock-1463059">Mark Hancock</a>, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a>; <a href="https://theconversation.com/profiles/petra-graham-892602">Petra Graham</a>, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a>, and <a href="https://theconversation.com/profiles/simon-french-713564">Simon French</a>, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a></em></p> <p>Do you suffer from low back pain that recurs regularly? If you do, you’re not alone. Roughly <a href="https://pubmed.ncbi.nlm.nih.gov/31208917/">70% of people</a> who recover from an episode of low back pain will experience a new episode in the following year.</p> <p>The recurrent nature of low back pain is a major contributor to the <a href="https://www.thelancet.com/journals/lanrhe/article/PIIS2665-9913(23)00098-X/fulltext">enormous burden</a> low back pain places on individuals and the health-care system.</p> <p>In our new study, published today in <a href="https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(24)00755-4/fulltext">The Lancet</a>, we found that a program combining walking and education can effectively reduce the recurrence of low back pain.</p> <h2>The WalkBack trial</h2> <p>We randomly assigned 701 adults who had recently recovered from an episode of low back pain to receive an individualised walking program and education (intervention), or to a no treatment group (control).</p> <p>Participants in the intervention group were guided by physiotherapists across six sessions, over a six-month period. In the first, third and fifth sessions, the physiotherapist helped each participant to develop a personalised and progressive walking program that was realistic and tailored to their specific needs and preferences.</p> <p>The remaining sessions were short check-ins (typically less than 15 minutes) to monitor progress and troubleshoot any potential barriers to engagement with the walking program. Due to the COVID pandemic, most participants received the entire intervention via telehealth, using video consultations and phone calls.</p> <p>The program was designed to be manageable, with a target of five walks per week of roughly 30 minutes daily by the end of the six-month program. Participants were also encouraged to continue walking independently after the program.</p> <p>Importantly, the walking program was combined with education provided by the physiotherapists during the six sessions. This education aimed to give people a better understanding of pain, reduce fear associated with exercise and movement, and give people the confidence to self-manage any minor recurrences if they occurred.</p> <p>People in the control group received no preventative treatment or education. This reflects what <a href="https://www.sciencedirect.com/science/article/abs/pii/S2468781222001308?via%3Dihub">typically occurs</a> after people recover from an episode of low back pain and are discharged from care.</p> <h2>What the results showed</h2> <p>We monitored the participants monthly from the time they were enrolled in the study, for up to three years, to collect information about any new recurrences of low back pain they may have experienced. We also asked participants to report on any costs related to their back pain, including time off work and the use of health-care services.</p> <p>The intervention reduced the risk of a recurrence of low back pain that limited daily activity by 28%, while the recurrence of low back pain leading participants to seek care from a health professional decreased by 43%.</p> <p>Participants who received the intervention had a longer average period before they had a recurrence, with a median of 208 days pain-free, compared to 112 days in the control group.</p> <p>Overall, we also found this intervention to be cost-effective. The biggest savings came from less work absenteeism and less health service use (such as physiotherapy and massage) among the intervention group.</p> <p>This trial, like all studies, had some limitations to consider. Although we tried to recruit a wide sample, we found that most participants were female, aged between 43 and 66, and were generally well educated. This may limit the extent to which we can generalise our findings.</p> <p>Also, in this trial, we used physiotherapists who were up-skilled in health coaching. So we don’t know whether the intervention would achieve the same impact if it were to be delivered by other clinicians.</p> <h2>Walking has multiple benefits</h2> <p>We’ve all heard the saying that “prevention is better than a cure” – and it’s true. But this approach has been largely neglected when it comes to low back pain. Almost all <a href="https://www.sciencedirect.com/science/article/pii/S0140673618304896?via%3Dihub">previous studies</a> have focused on treating episodes of pain, not preventing future back pain.</p> <p>A limited number of <a href="https://pubmed.ncbi.nlm.nih.gov/26752509/">small studies</a> have shown that exercise and education can help prevent low back pain. However, most of these studies focused on exercises that are not accessible to everyone due to factors such as high cost, complexity, and the need for supervision from health-care or fitness professionals.</p> <p>On the other hand, walking is a free, accessible way to exercise, including for people in rural and remote areas with limited access to health care.</p> <p>Walking also delivers many other <a href="https://www.vichealth.vic.gov.au/sites/default/files/VH_Benefits-of-Walking-Summary2020.pdf">health benefits</a>, including better heart health, improved mood and sleep quality, and reduced risk of several chronic diseases.</p> <p>While walking is not everyone’s favourite form of exercise, the intervention was well-received by most people in our study. Participants <a href="https://pubmed.ncbi.nlm.nih.gov/37271689/">reported</a> that the additional general health benefits contributed to their ongoing motivation to continue the walking program independently.</p> <h2>Why is walking helpful for low back pain?</h2> <p>We don’t know exactly why walking is effective for preventing back pain, but <a href="https://www.e-jer.org/journal/view.php?number=2013600295">possible reasons</a> could include the combination of gentle movements, loading and strengthening of the spinal structures and muscles. It also could be related to relaxation and stress relief, and the release of “feel-good” endorphins, which <a href="https://my.clevelandclinic.org/health/body/23040-endorphins">block pain signals</a> between your body and brain – essentially turning down the dial on pain.</p> <p>It’s possible that other accessible and low-cost forms of exercise, such as swimming, may also be effective in preventing back pain, but surprisingly, <a href="https://pubmed.ncbi.nlm.nih.gov/34783263/">no studies</a> have investigated this.</p> <p>Preventing low back pain is not easy. But these findings give us hope that we are getting closer to a solution, one step at a time.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/231682/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/tash-pocovi-1293184">Tash Pocovi</a>, Postdoctoral research fellow, Department of Health Sciences, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a>; <a href="https://theconversation.com/profiles/christine-lin-346821">Christine Lin</a>, Professor, Institute for Musculoskeletal Health, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>; <a href="https://theconversation.com/profiles/mark-hancock-1463059">Mark Hancock</a>, Professor of Physiotherapy, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a>; <a href="https://theconversation.com/profiles/petra-graham-892602">Petra Graham</a>, Associate Professor, School of Mathematical and Physical Sciences, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a>, and <a href="https://theconversation.com/profiles/simon-french-713564">Simon French</a>, Professor of Musculoskeletal Disorders, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/walking-can-prevent-low-back-pain-a-new-study-shows-231682">original article</a>.</em></p> </div>

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Independent you: preventing, and recovering from, elder abuse

<p>From implementing safeguards to stop it from beginning to taking back control if it does, there is a lot of power in your hands to avoid elder abuse.</p> <p>Previously, we explored the warning signs of elder abuse and how <a href="https://www.oversixty.com.au/finance/retirement-income/are-you-a-victim-of-elder-abuse-without-even-realising-it">it is possible to be a victim without even realising it</a>.</p> <p>And with more wealth owned by people over 60 now than ever before, the potential for abuse only continues to grow.</p> <p>So, how can you prevent elder abuse happening to you? And if you are already experiencing it, what can you do to regain control over your finances, independence and wellbeing? </p> <p><strong>Prevention better than cure</strong></p> <p>The best way to avoid the impacts of elder abuse is to protect yourself against it beginning in the first place.</p> <p>Awareness is the first step, so having <a href="https://www.oversixty.com.au/finance/retirement-income/are-you-a-victim-of-elder-abuse-without-even-realising-it">read this article and knowing the warning signs</a>, you’re already ahead of the game!</p> <p>Other preventative actions include:</p> <ul> <li>Maintaining contact: social interactions are important not just for warding off loneliness but providing access to other points of view and avenues for support. </li> <li>External advisers: engage your own advisers – don’t simply employ who someone tells you to. They should be an impartial, qualified set of eyes to monitor things for you and point out anything that doesn’t seem right. This includes a financial advisor, lawyer, accountant, doctor and so on. A support person attending appointments with you may give you extra assurance.</li> <li>Power of attorney/guardianship: nominate multiple people, so that no one individual has all the say. It can be useful to include someone who is not a relative for impartiality, such as a trusted friend or your lawyer. </li> <li>Superannuation beneficiaries: super is separate from your will, but beneficiary nominations can only be spouse, child, dependent or interdependent otherwise it will go to you Will.  In your Will you can direct to other people or charities. Some beneficiaries lapse, so will need to be renewed.</li> <li>Wills: review your will to ensure it reflects YOUR wishes, not someone else’s. People can jostle over not only their own inheritance but may try to influence you to leave others out. </li> <li>Documenting everything: keep a written record, especially where money is concerned – such as acting as Bank of Mum and Dad for adult kids to purchase property. Outline how much is given, what if any interest/repayments are expected and when, and what happens if their relationship subsequently breaks down.</li> <li>Encouraging independence: people who have come to expect handouts can become abusive if those handouts stop or requests for more are denied. Support and encourage others, especially your kids, to be financially independent and self-sufficient.</li> </ul> <p><strong>Taking back control</strong></p> <p>Sadly, prevention is no longer an option for an <a href="https://www.aihw.gov.au/family-domestic-and-sexual-violence/population-groups/older-people?xd_co_f=YjAzZDU4YTUtYzA5YS00YTNkLWJkNDQtNjdiZTM5ZmY5ZjQx#abuse">estimated 598,000 Australians</a> already experiencing elder abuse. However, it is still possible to break the cycle.</p> <p>Don’t be embarrassed or stick your head in the sand hoping things will improve. You have done nothing wrong. You are entitled to enjoy your retirement years.</p> <p>To take back control over your affairs, your wellbeing and your independence:</p> <ul> <li>Ensure your physical safety first and foremost.</li> <li>Seek medical attention for your physical and mental health (the latter is crucial for making good decisions around the other points on this list).</li> <li>Get support from another relative, close friend, neighbour, or other trusted person. Don’t be alone.</li> <li>Secure a roof over your head. Having a stable place to live gives you the security and focus to tackle other concerns.</li> <li>Freeze access to your money – bank accounts, credit cards etc. This will stop (further) unauthorised withdrawals or purchases being charged to you.</li> <li>Seek professional advice. Your financial adviser, tax accountant and lawyer will be able to guide you through protecting your home, money, guardianship and estate planning matters.</li> <li>Make informed changes. Don’t do anything rashly – make necessary changes once you have sought independent advice and considered your options. This may involve making changes to your power of attorney, will, superannuation, bank accounts, even your phone number in extreme cases.</li> <li>Consider counselling. Your abuser may not realise the severity of their actions. An independent counsellor may be able to help them see this and change their ways, and ultimately salvage your relationship.</li> </ul> <p>If you or someone you know is experiencing elder abuse, seek help straight away. Speak to a trusted relative or friend. Seek independent legal and financial advice about your affairs. Or call the government’s free elder abuse line on 1800 353 374. And if your life is in danger, call triple zero (000) immediately.</p> <p><strong><em>Helen Baker is a licensed Australian financial adviser and author of On Your Own Two Feet: The Essential Guide to Financial Independence for all Women. Helen is among the 1% of financial planners who hold a master’s degree in the field. Proceeds from book sales are donated to charities supporting disadvantaged women and children. Find out more at <a href="http://www.onyourowntwofeet.com.au/">www.onyourowntwofeet.com.au</a></em></strong></p> <p><strong><em>Disclaimer: The information in this article is of a general nature only and does not constitute personal financial or product advice. Any opinions or views expressed are those of the authors and do not represent those of people, institutions or organisations the owner may be associated with in a professional or personal capacity unless explicitly stated. Helen Baker is an authorised representative of BPW Partners Pty Ltd AFSL 548754.</em></strong></p> <p><em>Image credits: Getty Images </em></p>

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How to fall asleep without sleeping pills: 7 natural sleep aids that actually work

<p>It’s 3am and you’re suddenly wide awake. Try these seven science-backed strategies to fall back to sleep fast.</p> <p><strong>Give meditation a try </strong></p> <p>As a mindfulness coach, I’m very aware of the day-to-day anxieties and worries that can interfere with a good night’s sleep. One of the most effective natural sleep aids is a quick meditation session to ease yourself out of those stresses. If you’ve never meditated before, you’ll likely find the meditation interrupted by thoughts flashing through your mind.</p> <p>It’s important for you to know that this isn’t a failure on your part, and that you aren’t doing anything wrong. Thinking is just what the brain does, as naturally as lungs take in air. The point is to be non-judgmental yet aware of your thoughts, bodily experiences and breath, moment by moment.</p> <p><em>Sleep better, feel better! <a href="https://gaiam.innovations.com.au/p/gaiam-wellness/rollers-resistance/27-72435-gaiam-strengthen-stretch-kit?affiliate=GAIAM6O" target="_blank" rel="noopener">This Blackout Sleep Mask from Gaiam</a> will help you feel well rested and renewed. </em></p> <p><strong>Stop wanting to fall asleep</strong></p> <p>It’s counterintuitive, isn’t it? Sometimes trying too hard to do something is the very thing that prevents us from achieving it – and that’s never more true than when it comes to falling asleep. Desperately wanting to sleep will only stoke anxieties that will further stress your brain, essentially feeding it the message that it’s not safe to sleep.</p> <p>Throw in those worries about your to-do list at work the following day, and the whole thing can snowball into a panic attack. Try letting go of that feeling that you absolutely must sleep now, and observe your own anxieties for what they are without judgment. When you stop looking at sleep as a goal, you’ll find it easier to fall asleep.</p> <p><em>Before you climb into bed, set aside 10-15 minutes to help relax your body and mind, with <a href="https://gaiam.innovations.com.au/p/gaiam-wellness/restore-massage/27-73353-gaiam-wellness-acupressure-neck-back-pillow?affiliate=GAIAM60" target="_blank" rel="noopener">this wellness acupressure neck and back pillow from Gaiam</a>.</em></p> <p><strong>Start a journal </strong></p> <p>If you find yourself struggling to fall asleep, pick up a pen and paper (not your phone!), and start writing: simply scribble down an account of what’s going on inside your head. Although there’s no “right” way to journal, you might start by listing the events of your day, and from there, how those events and encounters made you feel.</p> <p>Building this structured picture of your thoughts may help you see that the problem that’s keeping you up at night, and is likely less overwhelming than you thought. Why my insistence on a pen and paper? First off, studies show the simple motor action that’s involved in the act of handwriting has a calming effect. Secondly, the light emitted by laptops and phones isn’t conducive to falling asleep.</p> <p><strong>Find yourself a "3am friend"</strong></p> <p>Some of us are lucky to have a ‘3am friend’, that close confidant you can call up in the wee hours knowing that they won’t hold it against you in the morning. Although it’s great to have someone to talk to when you want to fall asleep, it’s important that the conversation doesn’t just rehash the anxieties that are preventing you from catching shut-eye in the first place.</p> <p>Rather than using the call to seek solutions for those issues, talk about things that calm your nerves, or even have them assist you in deep breathing. It may sound silly, but doing a series of deep, relaxing breaths can help you let go of the troubles that are keeping you wide awake.</p> <p><strong>Take a warm shower</strong></p> <p>Taking a warm shower not only relaxes your muscles and soothes minor aches and pains, but it also raises your core body temperature. As soon as you step out of the shower, your body starts working at lowering that temperature, which is something that normally happens when you’re falling asleep naturally.</p> <p>(That’s why we always feel the need for a blanket when we sleep, no matter how warm it is!) By kick-starting that temperature-lowering process, you’re tricking your body into falling asleep fast.</p> <p><strong>Stretch yourself to sleep </strong></p> <p>Anxiety keeping you up? Research suggests mild stretching can help take the edge off and relax muscles that have become stiff and sore after a long day. We’re not talking intricate yoga poses or acrobatics here, either: Simple stretches like an overhead arm stretch and bending over to touch your toes should do the trick. Ramp up the relaxation potential with a soundtrack of ambient noise at a volume that’s just barely audible.</p> <p>There are plenty of white noise apps that are free to download, but soft music can work as well (so long as there are no lyrics). Just remember, if you’re using an electronic device to play these sleep-promoting sounds, make sure it’s placed screen-down so you’re not distracted by the light it emits.</p> <p><em>Stretching is healing, and this <a href="https://gaiam.innovations.com.au/p/gaiam-wellness/rollers-resistance/27-72435-gaiam-strengthen-stretch-kit?affiliate=GAIAM60" target="_blank" rel="noopener">Strengthen and Stretch Kit from Gaiam</a> is a great way to start. An on-line workout is also included to get you started.</em></p> <p><strong>Read (or listen!) to something new</strong></p> <p>When you’re struggling with insomnia, it might be tempting to pull an old favourite off the bookshelf. In reality, it’s better to read or listen to an audio book that covers a topic on which you know absolutely nothing. New information, while taking attention away from the stressors that are keeping you up at night, gives your brain enough of a workout to make it tire more quickly than when it’s engaged with familiar subjects and concepts.</p> <p>Again, if it’s an audio book or podcast you’re listening to, make sure the light-emitting side of the device is face down to keep the room as dark as possible. Darkness and warmth play an essential part in the production and maintenance of melatonin, the hormone that plays the central role falling asleep.</p> <p><em>Image credits: Getty Images</em></p> <p><em>This article by </em><em>Deepak Kashyap </em><em style="font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;">originally appeared on <a href="https://www.readersdigest.com.au/healthsmart/conditions/sleep/how-to-fall-asleep-without-sleeping-pills-7-natural-sleep-aids-that-actually-work" target="_blank" rel="noopener">Reader's Digest</a>. </em></p>

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Kate Middleton is having ‘preventive chemotherapy’ for cancer. What does this mean?

<p><a href="https://theconversation.com/profiles/ian-olver-1047">Ian Olver</a>, <em><a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a></em></p> <p>Catherine, Princess of Wales, is undergoing treatment for cancer. In a video thanking followers for their messages of support after her major abdominal surgery, the Princess of Wales explained, “tests after the operation found cancer had been present.”</p> <p>“My medical team therefore advised that I should undergo a course of preventative chemotherapy and I am now in the early stages of that treatment,” she said in the two-minute video.</p> <p>No further details have been released about the Princess of Wales’ treatment.</p> <p>But many have been asking what preventive chemotherapy is and how effective it can be. Here’s what we know about this type of treatment.</p> <h2>It’s not the same as preventing cancer</h2> <p>To <a href="https://www.cancer.org.au/about-us/how-we-help/prevention">prevent cancer developing</a>, lifestyle changes such as diet, exercise and sun protection are <a href="https://www.cancer.org.au/about-us/how-we-help/prevention">recommended</a>.</p> <p>Tamoxifen, a hormone therapy drug can be used to reduce the risk of cancer for some patients at <a href="https://www.mayoclinic.org/diseases-conditions/breast-cancer/in-depth/breast-cancer/art-20045353">high risk of breast cancer</a>.</p> <p>Aspirin <a href="https://www.cancer.gov/about-cancer/causes-prevention/research/aspirin-cancer-risk">can also be used</a> for those at high risk of bowel and other cancers.</p> <h2>How can chemotherapy be used as preventive therapy?</h2> <p>In terms of treating cancer, prevention refers to giving chemotherapy after the cancer has been removed, to prevent the cancer from returning.</p> <p>If a cancer is localised (limited to a certain part of the body) with no evidence on scans of it spreading to distant sites, local treatments such as surgery or radiotherapy can remove all of the cancer.</p> <p>If, however, cancer is first detected after it has spread to distant parts of the body at diagnosis, clinicians use treatments such as chemotherapy (anti-cancer drugs), hormones or immunotherapy, which circulate <a href="https://www.healthline.com/health/cancer/metastatic-cancer">around the body</a> .</p> <p>The other use for chemotherapy is to add it before or after surgery or radiotherapy, to prevent the primary cancer <a href="https://www.verywellhealth.com/adjuvant-therapy-5198903">coming back</a>. The surgery may have cured the cancer. However, in some cases, undetectable microscopic cells may have spread into the bloodstream to distant sites. This will result in the cancer returning, months or years later.</p> <p>With some cancers, treatment with chemotherapy, given before or after the local surgery or radiotherapy, can kill those cells and prevent the cancer coming back.</p> <p>If we can’t see these cells, how do we know that giving additional chemotherapy to prevent recurrence is effective? We’ve learnt this from clinical trials. Researchers have compared patients who had surgery only with those whose surgery was followed by additional (or often called adjuvant) chemotherapy. The additional therapy resulted in patients not relapsing and surviving longer.</p> <h2>How effective is preventive therapy?</h2> <p>The effectiveness of preventive therapy depends on the type of cancer and the type of chemotherapy.</p> <p>Let’s consider the common example of bowel cancer, which is at high risk of returning after surgery because of its size or spread to local lymph glands. The <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7564362/">first chemotherapy tested</a> improved survival by 15%. With more intense chemotherapy, the chance of surviving six years is approaching 80%.</p> <p>Preventive chemotherapy is usually given for three to six months.</p> <h2>How does chemotherapy work?</h2> <p>Many of the chemotherapy drugs stop cancer cells dividing by disrupting the DNA (genetic material) in the centre of the cells. To improve efficacy, drugs which work at different sites in the cell are given in combinations.</p> <p>Chemotherapy is not selective for cancer cells. It kills any dividing cells.</p> <p>But cancers consist of a higher proportion of dividing cells than the normal body cells. A <a href="https://www.canceraustralia.gov.au/cancer-types/breast-cancer/treatment/chemotherapy/how-does-chemotherapy-work#:%7E:text=Chemotherapy%20works%20by%20killing%20cells%20that%20are%20rapidly,cells%20can%20repair%20the%20damage%20and%20can%20recover.">greater proportion of the cancer is killed</a> with each course of chemotherapy.</p> <p>Normal cells can recover between courses, which are usually given three to four weeks apart.</p> <h2>What are the side effects?</h2> <p>The side effects of chemotherapy are usually reversible and are seen in parts of the body where there is normally a high turnover of cells.</p> <p>The production of blood cells, for example, is temporarily disrupted. When your white blood cell count is low, there is an increased risk of infection.</p> <p>Cell death in the lining of the gut leads to mouth ulcers, nausea and vomiting and bowel disturbance.</p> <p>Certain drugs sometimes given during chemotherapy can attack other organs, such as causing numbness in the hands and feet.</p> <p>There are also generalised symptoms such as <a href="https://www.cancervic.org.au/cancer-information/treatments/treatments-types/chemotherapy/side_effects_of_chemotherapy.html">fatigue</a>.</p> <p>Given that preventive chemotherapy given after surgery starts when there is no evidence of any cancer remaining after local surgery, patients can usually resume normal activities within weeks of completing the courses of chemotherapy.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/226461/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/ian-olver-1047">Ian Olver</a>, Adjunct Professsor, School of Psychology, Faculty of Health and Medical Sciences, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a></em></p> <p><em>Image credits: Getty Images </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/kate-middleton-is-having-preventive-chemotherapy-for-cancer-what-does-this-mean-226461">original article</a>.</em></p>

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What happens to teeth as you age? And how can you extend the life of your smile?

<p><em><a href="https://theconversation.com/profiles/arosha-weerakoon-792707">Arosha Weerakoon</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a></em></p> <p>A healthy smile <a href="https://pubmed.ncbi.nlm.nih.gov/37314011/">helps us</a> live long, well and happy lives. But just <a href="https://pubmed.ncbi.nlm.nih.gov/37436910/">like our bodies</a>, our teeth succumb to age-related changes.</p> <p>So what happens to teeth as you age? And what can you do to ensure your smile lasts the distance?</p> <h2>First, what are teeth made of?</h2> <p>The tooth crown is covered by a hard enamel coat that surrounds softer, brown dentine, which protects a centrally located pulp.</p> <p>Enamel is a complex weave of <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2584618/">brittle</a>, honeycomb-clustered strands that interact with light to make teeth appear opalescent (a pearly, milky iridescence).</p> <p><a href="https://onlinelibrary.wiley.com/doi/10.1111/j.1601-1546.2012.00269.x">Dentine under enamel</a> forms most of the tooth crown and root, and is made of collagen, mineral, water and proteins. Collagen strands are <a href="https://www.sciencedirect.com/science/article/pii/S0003996922002102?via%3Dihub#bib12">woven</a> to stretch and spring back, to <a href="https://www.sciencedirect.com/science/article/pii/S0003996922002102?via%3Dihub#bib12">prevent teeth</a> from cracking and breaking when we grind and chew.</p> <p>The pulp has blood vessels and nerves that communicate with the rest of your body.</p> <p>Enmeshed in the dentine mineral and collagen are small, <a href="https://pubmed.ncbi.nlm.nih.gov/8809302/">interconnected tubules</a> formed by specialised cells called <a href="https://www.sciencedirect.com/science/article/abs/pii/S1047847799940960">odontoblasts</a> that settle around the pulp, once our teeth completely form.</p> <p>Each tooth contains a <a href="https://pubmed.ncbi.nlm.nih.gov/23803461/">finite number of odontoblasts</a>, unlike the constantly replenished special bone cells that renew.</p> <h2>How do our teeth change as we age?</h2> <p>Unable to renew, our teeth <a href="https://www.sciencedirect.com/science/article/pii/S0003996922002102?via%3Dihub#bib19">become brittle</a>, and prone to fracture as dentine loses its spring.</p> <p>This is <a href="https://www.sciencedirect.com/science/article/pii/S0002817714613532?casa_token=1K9Y6CJXmsAAAAAA:t6y_b_Iy02AWpUGaiz4H8Fk0Kdfx6z1ypHiGOEjFqFNlU1jvSRCVjfYOyysgIErJvgCzh33c2hfX">more common</a> in teeth with existing crack lines, large fillings or root canal treatments.</p> <p>With time, the outer surface of enamel <a href="https://www.sciencedirect.com/science/article/abs/pii/S0022391305004348?casa_token=xXfdecXrLaoAAAAA:YE_0swAFtT3RyCUeJmPwciixQ0hwL-foLyC2RGtnlyUSJ9O-pPLQz0B8XNd4Gq1AMtCN2BgnCrqo">thins</a> to reveal the relatively opaque dentine that darkens as we age.</p> <p>The dentine darkens because the collagen weave <a href="https://www.sciencedirect.com/science/article/abs/pii/S1047847722000697">stiffens and shrinks</a>, and the fluid in the tubules <a href="https://www.sciencedirect.com/science/article/pii/S2590152422000010?via%3Dihub">fills with mineral</a>.</p> <p>The odontoblasts continue to form dentine inside the tooth to reduce the translucent pulp space. The increase in dentine makes our teeth appear <a href="https://www.sciencedirect.com/science/article/abs/pii/S0003996913003294">opaque</a> and insulates from hot and cold sensations. This is why <a href="https://www.sciencedirect.com/science/article/pii/S0300571215000494?casa_token=iiLtoxOZOYQAAAAA:RfaGR7lrq9dgWuO_nh6hLETzVUiIWdu-mB-Ev019vZH5t6meVyAHs3YpZzcu9FNrDBYQL6OExu6j">X-rays</a> are useful to detect cavities we may not feel.</p> <p>Food and drink particles fill micro-gaps and age-related fine crack lines that run up and down enamel to <a href="https://www.researchgate.net/profile/Yash-Kapadia/publication/322509199_Tooth_staining_A_review_of_etiology_and_treatment_modalities/links/5b4cd922a6fdcc8dae245b7d/Tooth-staining-A-review-of-etiology-and-treatment-modalities.pdf">discolour and stain</a>. These stains are easily managed by <a href="https://www.sciencedirect.com/science/article/pii/S2772559622000207">tooth whitening</a>.</p> <p>How else can you extend the life of your teeth and brighten your smile? Here are seven tips to avoid dental decline:</p> <h2>1. Avoid unnecessary forces</h2> <p>Avoid <a href="https://www.nature.com/articles/sj.bdj.2012.722">using</a> your teeth to hold things such as working tools or to open packaging.</p> <p>Take measures to avoid forces such as <a href="https://www.sciencedirect.com/science/article/pii/S1882761622000059">grinding or clenching</a> by wearing a night guard.</p> <p>If you have <a href="https://www.sciencedirect.com/science/article/pii/S0109564122002421">large fillings</a> or <a href="https://www.sciencedirect.com/science/article/pii/S0109564122001579?casa_token=kQPjGNgU2iQAAAAA:ytMnT5MLV8aRehNyyWD7qC7FXSBE5xpPCxnzZ2ryKsuyJePq1jHisue1udtN0Cs6NDYJ37xYHy_5">root canal-treated</a> teeth, speak to your dentist about <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/aej.12002?casa_token=RwMhhwmgjwwAAAAA%3AGCWVA9vjFX68S2DdKbCFl4jwTAjMeqVDoT3GtXTSjA7SMEc3ksktOMCUSz9ArikD4XhBM5v08nGCvmVF0g">specific filling materials or crowns</a> that can protect your teeth from cracking or breaking.</p> <h2>2. Share the load</h2> <p>If you are missing molars or premolars, distribute chewing forces evenly to prevent overloading your remaining teeth.</p> <p>Replace missing teeth with <a href="https://www.sciencedirect.com/science/article/pii/S010956411100858X?casa_token=4vrj3ssj0PEAAAAA:UODaFxNDCKmQ_lQs1faL6lh0xIeIfSFrRQBq-s0KF1ZvUJd6ytbXX37TVaiHLRzJPJaSDF_2aVmL">bridges</a>, <a href="https://aap.onlinelibrary.wiley.com/doi/full/10.1902/jop.2008.080188?casa_token=uA0r7imcRbUAAAAA%3AeXGszI5-Dcu4oKi33FCrRRviiAj0uyoP7V5wApIRQD1-1Zu-rkLAcoLhKMAJYVnC9tEnxj33UdNJIndEBA">implants</a> or well-fitted <a href="https://www.mdpi.com/1660-4601/18/13/6776">dentures</a> to support your bite. Get your dentures <a href="https://www.sciencedirect.com/science/article/pii/S0022391320301554">checked regularly</a> to ensure they fit and support adequately, and replace them at least every ten years.</p> <h2>3. Preserve your enamel</h2> <p>Reduce <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/jcpe.12330?casa_token=W2Ib34A77-QAAAAA%3AnLZtwwqZuueyHf1CMX0K9MERSW_Pvc3w0KlpArFT1KNusuopjEUcWmGd8pDUA7fQcj6DMkcS-JnXISFV1w">further enamel and dentine loss</a> by selecting soft-bristled <a href="https://www.tandfonline.com/doi/full/10.1080/00016350802195041?casa_token=E-ErdP543QUAAAAA%3A0Wz5AWwQxntBIc3UndFX_5nVbAYoPDx-PX1tg7Umxjr_QepX3CSIFVXYcrrxWV9iTx99Afk8c_zff-o">tooth brushes and non-abrasive toothpastes</a>.</p> <p>Certain whitening toothpastes can be abrasive, which can <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8874033/">roughen and wear</a> the tooth surfaces. If you are unsure, stick with toothpastes that are labelled “sensitive”.</p> <p>Reduce your exposure to <a href="https://www.nature.com/articles/sj.bdj.2012.722">acid</a> in food (think lemons or apple cider vinegar) or illness (reflux or vomiting) where possible to maintain enamel and prevent erosion.</p> <h2>4. Enhance your saliva</h2> <p><a href="https://onlinelibrary.wiley.com/doi/full/10.1111/jtxs.12356?casa_token=1moXbwnrDQIAAAAA%3AHz3Im9lmR3h75TmG8FSUQH-8_0UGnQ9TNkgaPL79LlrCmwC3kzZZJaAB2mSZHf4X7PX5y3GKaVoY5cm5JA">Saliva</a> protects against acid attacks, flushes our teeth, and has antibacterial properties to reduce erosion and decay (holes forming).</p> <p>Saliva is also important to help us chew, swallow and speak.</p> <p>But our saliva quality and quantity reduces because of age-related changes to our salivary glands as well as certain medications prescribed to <a href="https://pubmed.ncbi.nlm.nih.gov/19392837/">manage chronic illnesses</a> such as depression and high blood pressure.</p> <p>Speak to your doctor about other medication options to improve your saliva or manage reflux disease to prevent erosion.</p> <h2>5. Treat gum disease</h2> <p>Aesthetically, <a href="https://pubmed.ncbi.nlm.nih.gov/37358230/">treating gum disease (periodontitis)</a> reduces gum shrinkage (recession) that typically exposes the relatively darker tooth roots that are more <a href="https://journals.sagepub.com/doi/abs/10.1177/00220345231166294">prone to developing holes</a>.</p> <h2>6. Manage and prevent senescence</h2> <p><a href="https://pubmed.ncbi.nlm.nih.gov/36908187/">Cellular senescence</a> is the process that changes DNA in our cells to reduce our ability to withstand physical, chemical or biological damage.</p> <p>Cellular senescence enhances new cancer formation, the spread of existing cancers and the onset of chronic illnesses such as Alzheimer’s disease, diabetes, osteoporosis and heart disease.</p> <p>You can prevent cell damage by managing lifestyle factors such as smoking, uncontrolled diabetes and chronic infections such as gum disease.</p> <h2>7. Adapt and ask for help</h2> <p><a href="https://onlinelibrary.wiley.com/doi/full/10.1111/jan.15769?casa_token=SC-LouFQThsAAAAA%3A4jcvLRuJ56dGEm7ttvMad65hvUoZ7V5nvILg5sLFVZo8jxyQGR6YFeTcfM8sByTbdVrCWR1O5ytI3Z_crA">Ageing</a> can affect our cognition, hand dexterity and eyesight to prevent us from cleaning our teeth and gums as effectively as we once could.</p> <p>If this describes you, talk to your dental care team. They can help clean your teeth, and <a href="https://www.magonlinelibrary.com/doi/full/10.12968/bjon.2020.29.9.520?casa_token=_rol0NXx9c8AAAAA%3Aq8zgxiMSASwF1MRQZnZzfzmttn2x7FfGwsiIv71C_s_PTTmGD9JOIbqqtLNXa0oF9ogOjOCZwwpwB94">recommend products and tools</a> to fit your situation and abilities.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/215786/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/arosha-weerakoon-792707"><em>Arosha Weerakoon</em></a><em>, Senior Lecturer, School of Dentistry, The University of Queensland and General Dentist., <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a></em></p> <p><em>Image credits: Shutterstock</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/what-happens-to-teeth-as-you-age-and-how-can-you-extend-the-life-of-your-smile-215786">original article</a>.</em></p>

Body

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Taste depends on nature and nurture. Here are 7 ways you can learn to enjoy foods you don’t like

<p><em><a href="https://theconversation.com/profiles/nicholas-archer-181464">Nicholas Archer</a>, <a href="https://theconversation.com/institutions/csiro-1035">CSIRO</a> and <a href="https://theconversation.com/profiles/astrid-poelman-1481227">Astrid Poelman</a>, <a href="https://theconversation.com/institutions/csiro-1035">CSIRO</a></em></p> <p>You’re out for dinner with a bunch of friends, one of whom orders pizza with anchovies and olives to share, but you hate olives and anchovies! Do you pipe up with your preferred choice – Hawaiian – or stay quiet?</p> <p>This scene plays out every day around the world. Some people ferociously defend their personal tastes. But many would rather expand their palate, and not have to rock the boat the next time someone in their friend group orders pizza.</p> <p>Is it possible to train your tastebuds to enjoy foods you previously didn’t, like training a muscle at the gym?</p> <h2>What determines ‘taste’?</h2> <p>Taste is a complex system we evolved to help us navigate the environment. It helps us select foods with nutritional value and reject anything potentially harmful.</p> <p>Foods are made up of different compounds, including nutrients (such as proteins, sugars and fats) and <a href="https://www.youtube.com/watch?v=2P_0HGRWgXw">aromas</a> that are detected by sensors in the mouth and nose. These sensors create the <a href="https://www.youtube.com/watch?v=MZn2PMUWO-Y">flavour of food</a>. While taste is what the tastebuds on your tongue pick up, flavour is the combination of how something smells and tastes. Together with texture, appearance and sound, these senses collectively influence your food preferences.</p> <figure><iframe src="https://www.youtube.com/embed/MZn2PMUWO-Y?wmode=transparent&amp;start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption><span class="caption">Flavour is the overall impression you get when eating.</span></figcaption></figure> <p>Many factors influence food preferences, including age, genetics and environment. We each live in our own sensory world and no two people will have the same <a href="https://theconversation.com/curious-kids-why-do-some-people-find-some-foods-yummy-but-others-find-the-same-foods-yucky-77671">experience while eating</a>.</p> <p>Food preferences also change with age. Research has found young children have a <a href="https://pubmed.ncbi.nlm.nih.gov/24452237/">natural preference</a> for sweet and salty tastes and a dislike of bitter tastes. As they grow older their ability to like bitter foods grows.</p> <p>Emerging evidence shows bacteria in saliva can also produce enzymes that influence the taste of foods. For instance, saliva has been shown to cause the release of sulphur aromas in cauliflower. The <a href="https://www.acs.org/pressroom/presspacs/2021/acs-presspac-september-22-2021/childrens-dislike-of-cauliflower-broccoli-could-be-written-in-their-microbiome.html">more sulphur that is produced</a>, the less likely a kid is to enjoy the taste of cauliflower.</p> <h2>Nature versus nurture</h2> <p>Both genetics and the environment play a crucial role in determining food preferences. Twin studies estimate genetics have a moderate influence on food preferences (between 32% and 54%, depending on the food type) in <a href="https://www.sciencedirect.com/science/article/pii/S000291652305027X?via%3Dihub">children</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/27385609/">adolescents</a> and <a href="https://www.cambridge.org/core/journals/twin-research-and-human-genetics/article/dietary-patterns-and-heritability-of-food-choice-in-a-uk-female-twin-cohort/8507AAF01330C599BAC62BCC0EF4CF06">adults</a>.</p> <p>However, since our cultural environment and the foods we’re exposed to also shape our preferences, these <a href="https://pubmed.ncbi.nlm.nih.gov/24452237/">preferences are learned</a> to a large degree.</p> <p>A lot of this learning takes place during childhood, at home and other places we eat. This isn’t textbook learning. <a href="https://www.cabidigitallibrary.org/doi/10.1079/9780851990323.0093">It’s learning</a> by experiencing (eating), which typically leads to increased liking of the food – or by watching what others do (modelling), which can lead to both positive or negative associations.</p> <p><a href="https://www.sciencedirect.com/science/article/pii/S000291652305027X?via%3Dihub">Research</a> has shown how environmental influences on food preferences change between childhood and adulthood. For children, the main factor is the home environment, which makes sense as kids are more likely to be influenced by foods prepared and eaten at home. Environmental factors influencing adults and adolescents are more varied.</p> <h2>The process of ‘acquiring’ taste</h2> <p>Coffee and beer are good examples of bitter foods people “acquire” a taste for as they grow up. The ability to overcome the dislike of these is largely due to:</p> <ul> <li> <p>the social context in which they’re consumed. For example, in many countries they may be associated with passage into adulthood.</p> </li> <li> <p>the physiological effects of the compounds they contain – caffeine in coffee and alcohol in beer. Many people find these effects desirable.</p> </li> </ul> <p>But what about acquiring a taste for foods that don’t provide such desirable feelings, but which are good for you, such as kale or fatty fish? Is it possible to gain an acceptance for these?</p> <p>Here are some strategies that can help you learn to enjoy foods you currently don’t:</p> <ol> <li> <p>eat, and keep eating. Only a small portion is needed to build a liking for a specific taste over time. It may take 10–15 attempts or more before you can say you “like” the food.</p> </li> <li> <p><a href="https://www.sciencedirect.com/science/article/pii/S0950329302001106">mask bitterness</a> by eating it with other foods or ingredients that contain salt or sugar. For instance, you can pair bitter rocket with a sweet salad dressing.</p> </li> <li> <p>eat it repeatedly in a positive context. That could mean eating it after playing your favourite sport or with people you like. Alternatively, you could eat it with foods you already enjoy; if it’s a specific vegetable, try pairing it with your favourite protein.</p> </li> <li> <p>eat it when you’re hungry. In a hungry state you’ll be more willing to accept a taste you might not appreciate on a full stomach.</p> </li> <li> <p>remind yourself why you want to enjoy this food. You may be changing your diet for health reasons, or because you’ve moved countries and are struggling with the local cuisine. Your reason will help motivate you.</p> </li> <li> <p>start young (if possible). It’s easier for children to learn to like new foods as their tastes are less established.</p> </li> <li> <p>remember: the more foods you like, the easier it’ll become to learn to like others.</p> </li> </ol> <p>A balanced and varied diet is essential for good health. <a href="https://www.sciencedirect.com/science/article/pii/S0195666315003438?ref=pdf_download&amp;fr=RR-2&amp;rr=82a5fd5069821f63">Picky eating</a> can become a problem if it leads to vitamin and mineral deficiencies – especially if you’re avoiding entire food groups, such as vegetables. At the same time, eating too many tasty but energy-dense foods can increase your risk of chronic disease, including obesity.</p> <p>Understanding how your food preferences have formed, and how they can evolve, is a first step to getting on the path of healthier eating.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/215999/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/nicholas-archer-181464"><em>Nicholas Archer</em></a><em>, Research Scientist, Sensory, Flavour and Consumer Sciences, <a href="https://theconversation.com/institutions/csiro-1035">CSIRO</a> and <a href="https://theconversation.com/profiles/astrid-poelman-1481227">Astrid Poelman</a>, Principal Researcher, Public Health &amp; Wellbeing Group, <a href="https://theconversation.com/institutions/csiro-1035">CSIRO</a></em></p> <p><em>Image credits: Shutterstock</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/taste-depends-on-nature-and-nurture-here-are-7-ways-you-can-learn-to-enjoy-foods-you-dont-like-215999">original article</a>.</em></p>

Food & Wine

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“Bloody ripper of a meteor” lights up Perth skies

<p>A few lucky Western Australians have witnessed the moment a bright green meteor flashed brightly across the state's South West.</p> <p>The meteor was the size of a cricket ball and had a 200-kilometre-long tail, which was first spotted at around 8.50pm on Wednesday after entering the atmosphere over Pemberton.</p> <p>The rare spectacle, which only happens around three times a year, lasted about five seconds and travelled at a speed of 30 km/h  before the mix of iron, rock and ice dissolved over the Southern Ocean. </p> <p>“Iron meteors give off that beautiful green glow,” Perth Observatory spokesperson Matt Woods told <em>7NEWS</em>.</p> <p>Experts also said that this was triggered by the outer layer of the meteor melting because of intense friction.</p> <p>The observatory said that the meteor had set off a flood of messages, emails and calls from the people that witnessed the natural phenomenon. </p> <p>“That was a bloody ripper of a meteor tonight,” they posted on their Facebook page. </p> <p>One witness said that you had to see it with your own eyes to fully appreciate its beauty. </p> <p>“I will say it was way better in person. It looked almost rainbow-coloured. Just spectacular,” commented one person. </p> <p>“Did anyone just see a bright streak of light shooting from the sky? It was too bright to be a shooting star,” another person shared on social media. </p> <p>“It was massive and extremely bright.”</p> <p><em>Image: 7NEWS</em></p> <p> </p>

Domestic Travel

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Extraordinary snaps from around the world for the Nature Photographer of the Year awards

<p>Every year, the <a href="https://naturephotographeroftheyear.com" target="_blank" rel="noopener">Nature Photographer of the Year</a> awards showcase the best that Mother Nature has to offer. </p> <p>For the 2023 competition, photographers from all around the world have captured beautiful snaps of wildlife in their natural habitat, picturesque landscapes and much more. </p> <p>The annual competition is an initiative of Nature Talks, the organisation responsible for the Nature Talks Photo Festival that takes place in the Netherlands. </p> <p>This year, the competition saw entrant from South Africa, Germany, the USA, England, Finland, France, Luxembourg and many more corners of the globe. </p> <p>This year's winner is a photographer hailing from Canada, Jacquie Matechuk, who stole the show with her photo of the Spectacled Bear. </p> <p>Chairman Marco Gaiotti explained why her photo was chosen as the winner, "The Spanish moss hanging from this centuries-old fig tree gives an incredible sense of three-dimensionality while the soft light filtering through the colours highlights the profound connection between species and habitat in this image."</p> <p>"Finally, the pose of this spectacled bear fits perfectly into the texture of the photograph. Congratulations to Jacquie Matechuk for this outstanding photograph of the spectacled bear."</p> <p><em>All image credits: Nature Photographer of the Year</em></p>

International Travel

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6 natural remedies for tinnitus

<p>As anyone who’s ever experienced will agree, tinnitus is about as fun as repeatedly stubbing your big toe. But the good news is needn’t suffer in silence. There is a range of natural remedies available, and while these won’t eliminate tinnitus completely they may be used to help manage the condition.</p> <p>Before we go through some of the natural remedies, it might be useful to take a moment to understand what tinnitus actually is. Tinnitus is a physical condition that is usually caused by a fault in the hearing system where someone experiences noises or ringing in their ears when there is no external noise presents. It’s important to know tinnitus is symptom, and not a disease. It can be caused by a variety of things including exposure to loud noises, earwax blockages, ear-bone changes and age-related hearing lost. Approximately one in five Australians suffer from tinnitus.</p> <p><strong>1. Gingko biloba</strong></p> <p>Across the board, gingko biloba is generally considered one of the stronger herbal remedies for tinnitus. This widely available herbal remedy is often used to improve blood circulation, which can reduce the ringing sensation and improve the function of your ears. It also contains handy antibacterial and antifungal properties that can help eliminate any existing infections.</p> <p><strong>2. Apple cider vinegar</strong></p> <p>Apple cider vinegar provides a particularly useful daily tonic to help reduce the effects of tinnitus. A natural antifungal and anti-inflammatory agent, apple cider vinegar also works to alkalize your body and help rebalance your internal levels. Again, this remedy is quite helpful when it comes to getting rid of any underlying infections or fungus that may be contributing to your tinnitus.</p> <p><strong>3. Alpha lipoic acid</strong></p> <p>Alpha lipoic acid provides tinnitus sufferers with another handy supplement that can help minimise the effects of this condition. Functioning as an antioxidant, this vitamin-like chemical is known to help treat cell damage and restore natural vitamin levels in your body. Alpha lipoic acid has also been known to help improve neuron function and conduction, which may be contributing factors.</p> <p><strong>4. Holy basil</strong></p> <p>Here’s another natural remedy for treating tinnitus. Holy basil is known to contain a range of antibacterial properties and can be used to help kill the bacteria that may be contributing to the problem. In addition, holy basil can also be used as a way to provide you with relief from more severe forms of ear pain. It won’t solve the problem, but it will make it easier to manage.</p> <p><strong>5. Onions and garlic</strong></p> <p>While they might not make your breath smell the best on a hot date, onions and garlic have been used in the past to provide relief for tinnitus sufferers. Onions contain medicinal and antibacterial properties to help fight infections, while garlic can help reduce inflammation and improve blood circulation, which is particularly useful for tinnitus that is caused by high altitudes.</p> <p><strong>6. Saline solution</strong></p> <p>Here’s another nifty way to treat tinnitus naturally. Saline solution can help clear any blocked nasal passages and ease the pressure caused by excessive fluids that are building up in your sinuses. This simple remedy is a great way to provide effective relief from particular forms of tinnitus. </p> <p>So there you go, six handy ways to help relive yourself of the effects of tinnitus. Ultimately we would recommend that you go to a doctor and get a proper diagnosis if you happen to be suffering from tinnitus, but at the very least it’s handy to know that these natural remedies are around.</p> <p><em>Image credits: Getty Images</em></p>

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Our planet is burning in unexpected ways - here’s how we can protect people and nature

<p><em><a href="https://theconversation.com/profiles/luke-kelly-159658">Luke Kelly</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a>; <a href="https://theconversation.com/profiles/david-bowman-4397">David Bowman</a>, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a>; <a href="https://theconversation.com/profiles/ella-plumanns-pouton-1470045">Ella Plumanns Pouton</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a>; <a href="https://theconversation.com/profiles/grant-williamson-109967">Grant Williamson</a>, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a>, and <a href="https://theconversation.com/profiles/michael-shawn-fletcher-99786">Michael-Shawn Fletcher</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a></em></p> <p>People have been using fire for millennia. It is a vital part of many ecosystems and cultures. Yet human activities in the current era, sometimes called the “<a href="https://theconversation.com/did-the-anthropocene-start-in-1950-or-much-earlier-heres-why-debate-over-our-world-changing-impact-matters-209869">Anthropocene</a>”, are reshaping patterns of fire across the planet.</p> <p><a href="https://www.annualreviews.org/doi/abs/10.1146/annurev-environ-120220-055357">In our new research</a>, published in the Annual Review of Environment and Resources, we used satellite data to create global maps of where and how fires are burning. We calculated about 3.98 million square kilometres of Earth’s land surface burns each year. We also examined research spanning archaeology, climatology, ecology, Indigenous knowledge and paleoecology, to better understand the causes and consequences of fires.</p> <p>Our international team found strong evidence fires are burning in unexpected places, at unusual times and in rarely observed ways. These changes in fire patterns are threatening human lives and modifying ecosystems.</p> <p>But the future does not have to be bleak. There are many opportunities to apply knowledge and practice of fire to benefit people and nature.</p> <h2>Here’s how fire patterns are changing</h2> <p>Exploring multiple approaches and scales enables a deeper understanding of where, when and how fires burn.</p> <p>Satellite data provide evidence of changes in fire patterns at a global scale. <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2020RG000726">Annual fire season length</a> increased by 14 days from 1979 to 2020 and <a href="https://www.nature.com/articles/s41586-021-04325-1">night fires</a>, which indicate fires that cannot be quickly controlled, increased in intensity by 7.2% from 2003 to 2020.</p> <p>Other changes are apparent only when we look at data from particular regions. An increase in fire size and the frequency of large fires has recently been observed in <a href="https://www.pnas.org/doi/abs/10.1073/pnas.2103135118">forests and woodlands of the western United States</a>. Meanwhile fire-dependent grasslands and savannahs across <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/gcb.14711">Africa</a> and <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL082327">Brazil</a> have experienced reductions in fire frequency.</p> <p>It’s also important to consider the timescale and type of fire when interpreting changes. In Australia, <a href="https://www.nature.com/articles/s41467-021-27225-4">satellite records show</a> the frequency of very large forest fires has increased over the past four decades. At longer time scales, <a href="https://link.springer.com/article/10.1007/s13280-020-01339-3">charcoal and pollen records</a> indicate the frequency of low-intensity fires <a href="https://esajournals.onlinelibrary.wiley.com/doi/10.1002/fee.2395">decreased in parts of southeastern Australia</a> following British colonisation in 1788.</p> <h2>Changes in fire affect air, land and water</h2> <p>Many animals and plants have evolved strategies that enable them to thrive under particular fire patterns. This means changes to fire characteristics can <a href="https://www.science.org/doi/10.1126/science.abb0355">harm populations and ecosystems</a>.</p> <p><a href="https://conbio.onlinelibrary.wiley.com/doi/full/10.1111/conl.12905">Large and intense fires</a> are reducing the available forest habitat preferred by the greater glider. But a <a href="https://theconversation.com/research-reveals-fire-is-pushing-88-of-australias-threatened-land-mammals-closer-to-extinction-185965">lack of fire can be problematic too</a>. Threatened species of native rodents can benefit from food resources and habitats that flourish shortly after fire.</p> <p>There is evidence that emissions from recent fires are already modifying the atmosphere. The historically exceptional 2019–20 Australian wildfires produced <a href="https://www.science.org/doi/10.1126/science.abe1415#:%7E:text=Intense%2C%20widespread%20bushfires%20in%20Australia,from%20a%20moderate%20volcanic%20eruption.">record-breaking levels of aerosols</a> over the Southern Hemisphere, as well as substantial carbon emissions.</p> <p>The <a href="https://www.nature.com/articles/s41893-020-00610-5">wildfire smoke-related health costs</a> of the 2019–20 wildfires in Australia included an estimated 429 smoke-related premature deaths as well as 3,230 hospital admissions for cardiovascular and respiratory disorders.</p> <p>Changes in fire patterns are modifying water cycles, too. In the western United States, <a href="https://www.pnas.org/doi/10.1073/pnas.2009717118">fires are reaching higher elevations</a> and having strong impacts on <a href="https://www.pnas.org/doi/10.1073/pnas.2200333119">snow</a> and water availability.</p> <p>New studies are revealing how the air, land and water that support life on Earth are connected by fires. Smoke plumes from the 2019–20 Australian wildfires transported nutrients to the Southern Ocean, resulting in <a href="https://www.nature.com/articles/s41586-021-03805-8">widespread phytoplankton blooms</a>.</p> <h2>Humans are responsible for the changes</h2> <p>Human drivers such as climate change, land use, fire use and suppression, and transportation and extinction of species <a href="https://www.annualreviews.org/doi/abs/10.1146/annurev-environ-120220-055357">are causing shifts in fire patterns</a>.</p> <p>Increasing global temperatures and more frequent heatwaves and droughts increase the likelihood of fire by promoting hot, dry and windy conditions. A pattern of extreme fire weather outside of natural climate variation is already emerging in <a href="https://onlinelibrary.wiley.com/doi/10.1111/gcb.15388">North America</a>, <a href="https://link.springer.com/article/10.1007/s10584-014-1183-3">southern Europe</a> and <a href="https://iopscience.iop.org/article/10.1088/1748-9326/ac1e3a/meta">the Amazon basin</a>.</p> <p>Humans modify fire regimes by changing land use for agricultural, forestry and urban purposes. Until recent decades, large fires in tropical forests were uncommon. But <a href="https://www.nature.com/articles/s41586-021-03876-7">deforestation fires</a> used to clear primary forest for agriculture often promotes more frequent and intense uncontrolled fires.</p> <p>Humans have transported plants and animals across the globe, resulting in novel mixes of species that modify fuels and fire regimes. In many parts of the world, <a href="https://www.pnas.org/doi/abs/10.1073/pnas.1908253116">invasive grasses</a> have increased flammability and fire activity.</p> <p>Social and economic changes propel these drivers. Colonisation by Europeans and the displacement of Indigenous peoples and their skilful use of fire has been linked with fire changes in <a href="https://esajournals.onlinelibrary.wiley.com/doi/10.1002/fee.2395">Australia</a>, <a href="https://www.pnas.org/doi/10.1073/pnas.2116264119">North America</a> and <a href="https://royalsocietypublishing.org/doi/10.1098/rstb.2015.0174">South America</a>.</p> <h2>Using knowledge and practice of fire to achieve sustainability goals</h2> <p><a href="https://www.annualreviews.org/doi/abs/10.1146/annurev-environ-120220-055357">The pace and scale of these changes</a> represent challenges to humanity, but knowledge and practice of fire can help to achieve sustainability goals.</p> <p>This includes:</p> <ul> <li><a href="https://royalsocietypublishing.org/doi/10.1098/rstb.2015.0174">good health and wellbeing</a>, by supporting community-owned solutions and fire practices that increase social cohesion and health</li> <li><a href="https://www.sciencedirect.com/science/article/pii/S0301479718314658">sustainable cities and communities</a>, by designing green firebreaks and mixed-use areas with low fuels, strategically located in the landscape</li> <li><a href="https://www.science.org/doi/10.1126/science.aam7672">life on land</a>, by tailoring use of fire to promote and restore species and ecosystems</li> <li><a href="https://www.nature.com/articles/s41561-021-00867-1">climate action</a>, by applying low-intensity fire to promote the stability of soil organic matter and increase carbon storage</li> <li><a href="https://www.mdpi.com/1660-4601/18/8/3921">reduced inequalities</a>, by allocating resources before, during, and after wildfires to at-risk communities and residents.</li> </ul> <p>As the world changes, society as a whole needs to keep learning about the interplay between people and fire.</p> <p>A deep understanding of fire is essential for achieving a sustainable future – in other words, <a href="https://www.annualreviews.org/doi/abs/10.1146/annurev-environ-120220-055357">a better Anthropocene</a>.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/213215/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/luke-kelly-159658"><em>Luke Kelly</em></a><em>, Associate Professor in Quantitative Ecology, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a>; <a href="https://theconversation.com/profiles/david-bowman-4397">David Bowman</a>, Professor of Pyrogeography and Fire Science, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a>; <a href="https://theconversation.com/profiles/ella-plumanns-pouton-1470045">Ella Plumanns Pouton</a>, PhD candidate, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a>; <a href="https://theconversation.com/profiles/grant-williamson-109967">Grant Williamson</a>, Research Fellow in Environmental Science, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a>, and <a href="https://theconversation.com/profiles/michael-shawn-fletcher-99786">Michael-Shawn Fletcher</a>, Professor in Biogeography, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a></em></p> <p><em>Image credits: Getty Images</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/our-planet-is-burning-in-unexpected-ways-heres-how-we-can-protect-people-and-nature-213215">original article</a>.</em></p>

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Taking more than 5 pills a day? ‘Deprescribing’ can prevent harm – especially for older people

<p><em><a href="https://theconversation.com/profiles/emily-reeve-1461339">Emily Reeve</a>, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a>; <a href="https://theconversation.com/profiles/jacinta-l-johnson-1441348">Jacinta L Johnson</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>; <a href="https://theconversation.com/profiles/janet-sluggett-146318">Janet Sluggett</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>, and <a href="https://theconversation.com/profiles/kate-ohara-1462183">Kate O'Hara</a>, <a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a></em></p> <p>People are living longer and with more <a href="https://www.aihw.gov.au/reports/older-people/older-australia-at-a-glance/contents/health-functioning/health-disability-status">chronic health conditions</a> – including heart disease, diabetes, arthritis and dementia – than ever before. As societies continue to grow older, one pressing concern is the use of multiple medications, a phenomenon known as <a href="https://www.who.int/docs/default-source/patient-safety/who-uhc-sds-2019-11-eng.pdf">polypharmacy</a>.</p> <p>About <a href="https://onlinelibrary.wiley.com/doi/full/10.5694/mja2.50244">1 million older Australians</a> experience polypharmacy and this group is increasing. They may wake up in the morning and pop a pill for their heart, then another one or two to control blood pressure, a couple more if they have diabetes, a vitamin pill and maybe one for joint pain.</p> <p>Polypharmacy is usually <a href="https://www.safetyandquality.gov.au/sites/default/files/2021-04/fourth_atlas_2021_-_6.1_polypharmacy_75_years_and_over.pdf">defined</a> as taking five or more different medications daily. In aged care homes, <a href="https://doi.org/10.1016/j.archger.2022.104849">90% of residents</a> take at least five regular medications every single day. That can put their health at risk with increased costs for them and the health system.</p> <h2>Adding up over time</h2> <p>As people age, the effects of medications can change. Some medications, which were once beneficial, might start to do more harm than good or might not be needed anymore. About <a href="https://www.psa.org.au/wp-content/uploads/2020/02/Medicine-Safety-Aged-Care-WEB-RES1.pdf">half of older Australians</a> are taking a medication where the likely harms outweigh the potential benefits.</p> <p>While polypharmacy is sometimes necessary and helpful in managing multiple health conditions, it can lead to unintended consequences.</p> <p><a href="https://www.nps.org.au/living-with-multiple-medicines/costs">Prescription costs</a> can quickly add up. Taking multiple medications can be difficult to manage particularly when there are specific instructions to crush them or take them with food, or when extra monitoring is needed. There is also a risk of <a href="https://www.nps.org.au/consumers/understanding-drug-interactions">drug interactions</a>.</p> <p>Medications bought “over the counter” without a prescription, such as vitamins, herbal medications or pain relievers, can also cause <a href="https://onlinelibrary.wiley.com/doi/abs/10.5694/mja11.10698">problems</a>. Some people might take an over-the-counter medication each day due to previous advice, but they might not need it anymore. Just like prescription medications, over-the-counter medications add to the overall burden and cost of polypharmacy as well as drug interactions and side effects.</p> <p>Unfortunately, the more medications you take, the more likely you are to have <a href="https://www.nps.org.au/consumers/managing-your-medicines#risks-of-taking-multiple-medicines">problems with your medications</a>, a reduced quality of life and increased risk of falls, hospitalisation and death. Each year, <a href="https://www.psa.org.au/wp-content/uploads/2019/01/PSA-Medicine-Safety-Report.pdf">250,000 Australians</a> are admitted to hospital due to medication-related harms, many of which are preventable. For example, use of multiple medications like sleeping pills, strong pain relievers and some blood pressure medications can cause drowsiness and dizziness, potentially resulting in a <a href="https://betterhealthwhileaging.net/preventing-falls-10-types-of-medications-to-review/">fall</a> and broken bones.</p> <h2>Prescribing and deprescribing are both important</h2> <p>Ensuring safe and effective use of medications involves both prescribing, and <a href="https://www.racgp.org.au/clinical-resources/clinical-guidelines/key-racgp-guidelines/view-all-racgp-guidelines/silver-book/part-a/deprescribing">deprescribing</a> them.</p> <p><a href="https://www.australiandeprescribingnetwork.com.au/474-2/">Deprescribing</a> is a process of stopping (or reducing the dose of) medications that are no longer required, or for which the risk of harm outweighs the benefits for the person taking them.</p> <p>The process involves reviewing all the medications a person takes with a health-care professional to identify medications that should be stopped.</p> <p>Think of deprescribing as spring cleaning your medicine cabinet. Just like how you tidy up your house and get rid of objects that are causing clutter without being useful, deprescribing tidies up your medication list to keep only the ones truly required.</p> <h2>But care is needed</h2> <p>The process of deprescribing requires close monitoring and, for many medications, slow reductions in dose (tapering).</p> <p>This helps the body adjust gradually and can prevent sudden, unpleasant changes. Deprescribing is often done on a trial basis and medication can be restarted if symptoms come back. Alternatively, a safer medication, or non-drug treatment may be started in its place.</p> <p>Studies show deprescribing is a safe process when managed by a health-care professional, both for people living at <a href="https://link.springer.com/article/10.1007/s11606-020-06089-2">home</a> and those in <a href="https://doi.org/10.1016/j.jamda.2018.10.026">residential aged care</a>. You should always talk with your care team before stopping any medications.</p> <p>Deprescribing needs to be a team effort involving the person, their health-care team and possibly family or other carers. Shared decision-making throughout the process empowers the person taking medications to have a say in their health care. The team can work together to clarify treatment goals and decide which medications are still serving the person well and which can be safely discontinued.</p> <p>If you or a loved one take multiple medications you might be eligible for a free visit from a pharmacist (<a href="https://www.nps.org.au/assets/NPS/pdf/NPSMW2390_Anticholinergics_HMR_Factsheet.pdf">a Home Medicines Review</a>) to help you get the best out of your medications.</p> <h2>What’s next?</h2> <p>Health care has traditionally focused on prescribing medications, with little focus on when to stop them. Deprescribing is not happening as often as it should. <a href="https://www.australiandeprescribingnetwork.com.au/">Researchers</a> are working hard to develop tools, resources and service models to support deprescribing in the community.</p> <p>Health-care professionals may think older adults are not open to deprescribing, but about <a href="https://academic.oup.com/biomedgerontology/article/77/5/1020/6352400">eight out of ten people</a> are willing to stop one or more of their medications. That said, of course some people may have concerns. If you have been taking a medication for a long time, you might wonder why you should stop or whether your health could get worse if you do. These are important questions to ask a doctor or pharmacist.</p> <p>We need more <a href="https://shpa.org.au/news-advocacy/MedsAware">public awareness</a> about polypharmacy and deprescribing to turn the tide of increasing medication use and related harms. <!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/211424/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/emily-reeve-1461339">Emily Reeve</a>, Senior Research Fellow in the Centre for Medicine Use and Safety , <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a>; <a href="https://theconversation.com/profiles/jacinta-l-johnson-1441348">Jacinta L Johnson</a>, Senior Lecturer in Pharmacy Practice, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>; <a href="https://theconversation.com/profiles/janet-sluggett-146318">Janet Sluggett</a>, Enterprise Fellow, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>, and <a href="https://theconversation.com/profiles/kate-ohara-1462183">Kate O'Hara</a>, PhD student, Clinical Pharmacology and Toxicology, <a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a></em></p> <p><em>Image credits: Getty Images</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/taking-more-than-5-pills-a-day-deprescribing-can-prevent-harm-especially-for-older-people-211424">original article</a>.</em></p>

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Daily aspirin doesn’t prevent strokes in older, healthy people after all

<p><em><a href="https://theconversation.com/profiles/nial-wheate-96839">Nial Wheate</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> and <a href="https://theconversation.com/profiles/tina-hinton-329706">Tina Hinton</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p>The daily use of <a href="https://www.nps.org.au/australian-prescriber/articles/drugs-in-secondary-stroke-prevention">low dose aspirin</a> has been a mainstay of preventing strokes for decades. While there has always been a risk of bleeding associated with aspirin use, the benefits were thought to outweigh the risk.</p> <p>Now <a href="https://dx.doi.org/10.1001/jamanetworkopen.2023.25803">new research</a> led by Monash University has shown daily, low-dose aspirin doesn’t prevent strokes in relatively healthy people aged over 70. And it increases their risk of bleeding on the brain after falls or other injuries.</p> <p>But if you’re taking aspirin, it doesn’t mean you should abruptly stop. It may still have a role to play in treating people at high risk of stroke. Or, after talking to your doctor, there might be better options available.</p> <h2>Why has aspirin been used to prevent strokes?</h2> <p>Aspirin is an anti-platelet medicine, which is commonly known as a blood-thinner. <a href="https://www.lifeblood.com.au/blood/learn-about-blood/platelets">Platelets</a> are the component of blood primarily responsible for its clotting action. They are what stop you from continuously bleeding any time you have a cut or scrape on your skin.</p> <p>A <a href="https://strokefoundation.org.au/about-stroke/learn/what-is-a-stroke">stroke</a> is when oxygen can’t get into the brain because of a burst or blocked blood vessel. A blockage can occur when platelets in the bloodstream form a clot and it gets stuck in the artery.</p> <p>Because aspirin acts on platelets, it can help prevent the clots that can lead to a stroke.</p> <p>But because aspirin acts on platelets, it can also increase the risk of <a href="https://www.mayoclinic.org/diseases-conditions/heart-disease/in-depth/daily-aspirin-therapy/art-20046797#:%7E:text=While%20daily%20aspirin%20can%20help,of%20developing%20a%20stomach%20ulcer.">unwanted bleeding</a>, usually in the stomach. It can also increase your risk of bleeding more when you have another injury, like hitting your head.</p> <p>Aspirin isn’t just used for the prevention of strokes. It is also the first aid treatment for someone undergoing a <a href="https://www.nps.org.au/australian-prescriber/articles/acute-myocardial-infarction-early-treatment">heart attack</a>.</p> <h2>Findings of the Monash trial</h2> <p>New <a href="https://dx.doi.org/10.1001/jamanetworkopen.2023.25803">research from Australia and the United States</a> reports results from the Aspirin in Reducing Events in the Elderly (ASPREE) trial.</p> <p>The researchers examined the protective use of daily low-dose aspirin (100 mg) in nearly 2,000 people who were aged 70 years and older and had no history of heart disease or stroke and whose blood pressure and cholesterol were well managed.</p> <p>When compared with placebo, aspirin didn’t reduce or increase the risk of stroke. Of the participants who took the aspirin, 195 or 4.6% had a stroke. Of those who took the placebo, 203 people or 4.7% had a stroke.</p> <p>But it did statistically increase the rate of non-stroke bleeding in the participants’ brains, for example when they injured their head. Those on aspirin showed a rate of bleeding in the brain of 1.1% (108 participants) compared with 0.8% (79 people) for those on placebo. This is a relatively, low but serious, risk.</p> <p>These findings are not entirely new. <a href="https://www.nejm.org/doi/full/10.1056/NEJMoa1800722?query=featured_home">Research</a> published five years ago based on the same ASPREE trial showed a similar result: a higher rate of bleeding among those taking low-dose aspirin compared with placebo.</p> <p>However as the study authors note, aspirin continues to be widely used for the prevention of stroke.</p> <h2>What are the study’s limitations?</h2> <p>The researchers examined aspirin in mostly people of white European heritage.</p> <p>So we don’t know whether the results are translatable to people with different ethnic backgrounds. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2594139/">Genetics and ethnicity</a> can significantly impact the efficacy and safety of some drugs.</p> <p>The clinical trial only included people who were not significantly at risk of a stroke, and had no history of heart disease.</p> <p>Younger age groups were not studied either, so we cannot make any conclusions about their use of low dose aspirin to prevent stroke.</p> <p>It’s also possible the potential benefits and risks are different for those who have underlying heart problems or who have previously had a stroke and are therefore at higher risk of another stroke.</p> <h2>I’m taking aspirin, what should I do?</h2> <p>If you’re taking daily low-dose aspirin and are concerned by the results of the study, it’s important you don’t just stop taking your medicine. Speak to your doctor or pharmacist.</p> <p>For people who are at high risk of having a stroke, or have previously had one, low-dose aspirin may remain their treatment of choice despite the slight bleeding risk.</p> <p>If you’re at high risk of bleeding, for example because of falls and other accidents due to advanced age, frailty, or another underlying condition, your doctor may be able to reduce the amount of aspirin you take by adding in <a href="https://www.nps.org.au/australian-prescriber/articles/dipyridamole">dipyridamole</a> or prescribing a different medicine completely, such as <a href="https://www.nps.org.au/australian-prescriber/articles/clopidogrel">clopidogrel</a>.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/210388/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/nial-wheate-96839">Nial Wheate</a>, Associate Professor of the Sydney Pharmacy School, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> and <a href="https://theconversation.com/profiles/tina-hinton-329706">Tina Hinton</a>, Associate Professor of Pharmacology, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p><em>Image credits: Getty </em><em>Images </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/daily-aspirin-doesnt-prevent-strokes-in-older-healthy-people-after-all-210388">original article</a>.</em></p>

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13 homemade weed killers that work

<p>Don’t want to use chemicals on your garden? You don't have to! Mix up these handy helpers in the kitchen.</p> <p><strong>1. Boiling water</strong></p> <p>Homemade treatments don’t come much cheaper than this. Put the kettle on, boil a pot of water and then pour it straight over the weeds – just make sure to avoid any surrounding plants. This works especially for small weed coming up through the cracks in pavement or in brickwork.</p> <p><strong>2. White vinegar</strong></p> <p>Is there anything white vinegar can’t do? You can use regular old kitchen vinegar or get the heavy duty stuff from gardening stores. Spray directly onto the leaves of the weeds and watch them fade away.</p> <p><strong>3. Salt</strong></p> <p>Another kitchen staple that can do double duty in the garden. You can either sprinkle rock salt or basic table salt directly around garden beds where weeds usually appear or create a 3:1 solution of water and salt to spray onto the leaves.</p> <p><strong>4. Salt &amp; vinegar</strong></p> <p>Combine the two and you’ll get even better results! Mix a cup of table salt with a litre of vinegar, then brush directly onto the leaves of the weeds. It’ll kill anything it touches, so avoid other plants.</p> <p><strong>5. Vegetable oil</strong></p> <p>For bulbous weeds, like onion weed and oxalis, you can inject vegetable oil into the ground surrounding the bulbs. The oil will coat the bulbs so they suffocate and will then rot into the soil.</p> <p><strong>6. Cornmeal</strong></p> <p>This won't kill existing weeds but is great for preventing them from sprouting in the first place. Cornmeal is a pre-emergent, meaning it stops seeds from growing, so it’s best for using around established plants.</p> <p><strong>7. Clove or citrus oil</strong></p> <p>Mix 15 to 20 drops of clove or citrus oil with a litre of water and spray or brush directly onto the leaves. This works best on small, actively growing seedlings rather than more established weeds.</p> <p><strong>8. Rubbing alcohol</strong></p> <p>Grab that bottle of rubbing alcohol out of the bathroom cabinet and mix two tablespoons with a litre of water. Pour it into a spray bottle and spray directly onto the weeds. The alcohol removes moisture so the weeds will quickly dry out and die.</p> <p><strong>9. Baking soda</strong></p> <p>Baking soda is sodium bicarbonate (essentially a salt), so increases the salinity of the ground to a point where the weeds cannot survive. Use around a teaspoon per weed to cover the entire plant, especially the stem. It’s also great for weeds in cracks.</p> <p><strong>10. Bleach</strong></p> <p>This one couldn’t be simpler. Pour undiluted bleach straight over the top of mature weeds at the hottest part of the day, then let the sun do its work. You should be able to pull the dead weeds out the next day. Plus the bleach stays in the soil and prevents new growth.</p> <p><strong>11. Newspaper</strong></p> <p>Rather than killing the weeds, you can smother them with leftover newspaper. Lay down at least four sheets (though the thicker the better) and the lack of sun means the weeds won’t be able to sprout.</p> <p><strong>12. Mulch</strong></p> <p>Another one from the smothering camp, a good layer of mulch will keep your soil moist, healthy and weed-free. It also blocks out the sunshine weeds need to grow while leaving the surrounding plants untouched.</p> <p><strong>Elbow grease</strong></p> <p>Ok, so this isn’t actually something you put on the weeds, but it’s all you really need to get rid of most of them. Roll up your sleeves, put on some gloves and get pulling. Make sure you get the roots so they don’t grow straight back.</p> <p><em>Image: Unsplash / Josue Michel</em></p>

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6 of the world’s most beautiful waterfalls

<p>They are one of the most stunning natural wonders on the planet, and these are six of the world’s most beautiful waterfalls.</p> <p><strong>1. Slejlandsfoss, Iceland</strong></p> <p>The land of fire and ice is full of incredible waterfalls, and (if we have to choose) Slejlandsfoss is our pick. It’s 65 metres high and the water tumbles off a grassy cliff, plunging in a huge arc to the ground below. It’s possible to walk right behind it, though you’ll definitely need a raincoat. In the right light, it will look like you’re standing right beneath a rainbow.</p> <p><strong>2. Iguassu Falls, Brazil and Argentina</strong></p> <p>Easily the world’s most beautiful border crossing, Iguassu Falls splits the countries of Brazil and Argentina along the River Iguassu. Though a relatively petite 82 metres in height, it’s the width of the falls that is truly breathtaking. They stretch for just under three kilometres, running along a series of lush forested cliffs and spraying an incredible amount of water into the sky.</p> <p><strong>3. Kaieteur Falls, Guyana</strong></p> <p>This one isn’t easy to get to (you’ll probably need to fly in on a very small plane), but it’s definitely worth the effort. Tucked away in the densely forested nation of Guyana in Central America, it’s absolutely huge, standing at 226 metres tall and averaging 663 cubic metres of water per second. Few falls in the world have this kind of raw power and it is quite a sight to behold.</p> <p><strong>4. Detian Falls, Vietnam and China</strong></p> <p>Straddling the border between these two nations, Detian Falls is the collective name for two converging waterfalls. It's one of the largest falls in Asia, but the waters are relatively gentle. Boat trips can take you right up to the cascade or you can ride a bamboo raft through to tranquil swimming holes. Just make sure you don’t go too far and end up in another country…</p> <p><strong>5. Parakunui Falls, New Zealand</strong></p> <p>This waterfall can’t compete in terms of size. It falls only 20 metres over three tiers of sloping rocks surrounded by ancient forest. It makes up for it in beauty and looks like something from a fairytale. You half expect pixies to dance out from under the leaves any minute. The walk through the forest to reach the falls is just as captivating.</p> <p><strong>6. Horizontal Falls, Western Australia</strong></p> <p>While not a true waterfall in the traditional sense, Horizontal Falls will still take your breath away. Described as one of the greatest wonders of the natural world, the falls run horizontally rather than vertically as seawater builds up in a channel between a narrow rocky gap. It’s best seen from the air, so splurge on a helicopter flight.</p> <p><em>Images: Getty, Shutterstock</em></p>

International Travel

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6 natural seasickness remedies

<p>Don’t let motion sickness stop you from enjoying a cruise. While there are lots of over-the-counter medications available to stop sea sickness, these natural remedies also work wonders.</p> <p><strong>1. Ginger</strong></p> <p>Ginger is loaded with health benefits but it has been proven to be highly effective in preventing seasickness. If you know you are prone to motion sickness, include ginger into your diet the days prior to leaving on your cruise and while you are out at sea. Drinking ginger tea is an easy way to incorporate the powerful herb into your diet.</p> <p><strong>2. Herbal tea</strong></p> <p>Herbal tea is a great beverage that will help settle your stomach and prevent vomiting that is caused by seasickness. Herbal teas are also packed with antioxidants which are effective anti-ageing agents and they also improve digestion.</p> <p><strong>3. Apple juice</strong></p> <p>Drinking a glass of apple juice before departure can help settle your stomach. Although sugary foods are not always good for motion sickness, non-citrus juices will help feelings of queasiness.</p> <p><strong>4. Ice</strong></p> <p>Ice has been found to help queasiness for motion sickness – it’s even a remedy that works for morning sickness. The ice is cold, refreshing, hydrating and the water dilutes excess stomach acid. You can also opt for an ice block if you are in the prevention stage of motion sickness.  </p> <p><strong>5. Peppermint</strong></p> <p>Having peppermint either through tea, lozenges or peppermint oil, can help prevent nausea. If you are travelling with family, peppermint is great to prevent children from getting sick due to its pleasant taste.</p> <p><strong>6. Dry crackers</strong></p> <p>Dry crackers are an easily digestible snack that can help prevent nausea and vomiting. Crackers are high in starch and help absorb gastric aid. Crackers eliminate hunger without having a strong smell or taste that could increase the nausea.</p> <p><em>Image credits: Getty Images</em></p>

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12 trusted home remedies that will only make you worse

<p><strong>Proceed with caution</strong></p> <p>Any herbal supplement or remedy could potentially cause liver or kidney failure or have dangerous interactions with other medications you may be taking. That’s why physician Dr Ehsan Ali, recommends you ask your doctor before popping any herbal pill or natural cure.</p> <p>“All patients of all ages should check with their doctor first about what home remedy they want to try,” says Dr Ali. “Better to be safe than sorry!”</p> <p><strong>St. John's Wort</strong></p> <p>This herb is touted as a treatment for depression, but comprehensive studies are lacking. Dangers can arise when patients are already taking other medications. There have been incidents of St. John’s Wort interfering with birth control pills, leading to unintended pregnancies.</p> <p>The National Center for Complementary and Integrative Health warns that St. John’s Wort can disrupt the action of many medications, including warfarin, antidepressants, and anti-rejection drugs following organ transplants.</p> <p><strong>Kava</strong></p> <p>This herb, grown on South Pacific islands is often suggested for anxiety. It has been found to have a calming effect similar to Valium. Research, including a study published in 2015 in the journal Trialssuggests that kava may be an effective treatment for generalised anxiety disorder.</p> <p>However, heavy consumption of the herb is linked with heart problems and eye irritation.</p> <p><strong>Kitchen cures for burns</strong></p> <p>Kitchen cures can seem harmless and certainly, food products can make gentle and effective beauty treatments (think: avocado or honey masks for skin and hair). But when someone has an injury or disease, natural products can do more harm than good.</p> <p>Dr Svetlana Kogan, a holistic physician, has heard many potentially dangerous cures for injuries, including applying egg whites to burns. Egg whites, especially organic ones, can be full of bacteria – including salmonella – which could lead to serious infections. Instead, minor burns can be treated at home with cool water and acetaminophen for pain.</p> <p><strong>Gargling with mouthwash</strong></p> <p>The common cold continues to confound doctors and there isn’t much sufferers can do except stay hydrated. But when the symptoms progress to an inflamed throat, indulging in the common practice of gargling with mouthwash can do more harm than good.</p> <p>“Gargling inflamed tonsils with mouthwash is actually very irritating to the area and does not have any effect on potential strep throat,” says Dr Kogan. Her recommendation for a sore throat? Warm liquids to soothe the inflamed area and get plenty of rest.</p> <p><strong>Money</strong></p> <p>The best use for money when it comes to your health is paying your medical bills. But some people use currency to try and cure ailments. For years, placing a coin or other hard, flat object on a baby’s belly to help heal an umbilical hernia has been a common practice in many cultures – a very unsafe practice: “An umbilical hernia is a gap in the layer of muscle in the abdominal wall (called the rectus abdominis muscle),” explains Dr Danelle Fisher, a paediatrician.</p> <p>“The muscle usually grows together and the hernia goes away on its own in more than 90 per cent of babies who are born with it. Having an object strapped to the baby’s belly is not advisable because it can cause a skin infection and it doesn’t change the hernia or hasten its healing.” (Not to mention that coins can be pretty dirty and are a choking hazard for your baby.) So what should you do if your baby has an umbilical hernia? Nothing, aside from watchful waiting and consulting with your child’s paediatrician.</p> <p><strong>Breast milk</strong></p> <p>Mother’s milk is the best possible natural food for babies. Although many mothers claim their milk clears up skin conditions, there’s no scientific proof of this, warns Dr Sarah Yamaguchi, an obstetrician and gynecologist. “Breast milk can transmit infectious diseases such as HIV and pumped breast milk if not stored properly can be contaminated and can actually introduce bacteria into an already infected area,” says Dr Yamaguchi.</p> <p>Instead, she advises, patients suffering from infections or inflamed skin should try to keep the area clean and dry and seek medical attention.</p> <p><strong>Castor oil</strong></p> <p>In her work as an obstetrician, Dr Yamaguchi has seen her fair share of women in the final stages of pregnancy who just cannot wait to have their baby. She has seen many women take castor oil believing it will jump-start labour.</p> <p>“Castor oil may help if you are constipated and need to pass a bowel movement, but it’s not going to help you go into labour and it tastes awful,” she says.</p> <p><strong>Syrup of Ipecac</strong></p> <p>This syrup, made from the roots of a South American plant, is often kept in the home by parents to act as a counter treatment for accidental poisoning, as it induces vomiting. However, this form of treatment is incredibly dangerous, warns Dr Fisher.</p> <p>Many poisons do further damage when they make their way out of the body, damaging the oesophagus and potentially causing breathing problems. Dr Fisher advises parents not to use syrup of ipecac at all. The only appropriate reaction to a child swallowing something poisonous, she says, is to call your local Poison Control immediately and seek medical treatment.</p> <p><strong>Charcoal</strong></p> <p>Some people believe that activated charcoal, often derived from coconut shells, is thought to trap and remove dangerous toxins from the body. It is often recommended for treating bloat and constipation. However, it is a controversial treatment.</p> <p>Dr Kogan has heard of patients swallowing activated charcoal for detoxification purposes, which she strongly discourages. “It is dangerous because it can cause life-threatening intestinal obstructions and severe dehydration,” she says. Eating well and drinking plenty of water can have similar, but safer, detoxification effects on the body.</p> <p><strong>Blowing on or licking a wound</strong></p> <p>Parents everywhere are known for spitting on a tissue and using it to clean their children’s faces and sometimes even to clean a wound. Blowing on or introducing saliva to a cut is very dangerous.</p> <p>“Our breath and saliva have tons of bacteria which can contaminate the wound and lead to an infection,” says Dr Kogan. Instead, use fresh water and consult a doctor if needed.</p> <p><strong>Vitamins</strong></p> <p>As long as you follow a healthy diet, you’ll get all the vitamins and minerals you need. That’s good because sliding into the habit of trying to make up supposed deficiencies with supplements can quickly lead to trouble, warns Dr Kogan.</p> <p>The danger comes when people ignore the recommended doses and take too much of a particular vitamin. Too much vitamin D, for instance, can cause liver and heart problems, while an overabundance of B6 can lead to nerve toxicity; a vitamin A overdose can even cause death in extreme cases.</p> <p><em>Image credits: Getty Images</em></p> <p><em>This article originally appeared on <a href="https://www.readersdigest.com.au/healthsmart/12-trusted-home-remedies-that-will-only-make-you-worse?pages=1" target="_blank" rel="noopener">Reader's Digest</a>. </em></p>

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