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What is cognitive functional therapy? How can it reduce low back pain and get you moving?

<p><em><a href="https://theconversation.com/profiles/peter-osullivan-48973">Peter O'Sullivan</a>, <a href="https://theconversation.com/institutions/curtin-university-873">Curtin University</a>; <a href="https://theconversation.com/profiles/jp-caneiro-1463060">JP Caneiro</a>, <a href="https://theconversation.com/institutions/curtin-university-873">Curtin University</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>, and <a href="https://theconversation.com/profiles/peter-kent-1433302">Peter Kent</a>, <a href="https://theconversation.com/institutions/curtin-university-873">Curtin University</a></em></p> <p>If you haven’t had lower back pain, it’s likely you know someone who has. It affects <a href="https://pubmed.ncbi.nlm.nih.gov/22231424/">around 40% of adults</a> in any year, ranging from adolescents to those in later life. While most people recover, <a href="https://pubmed.ncbi.nlm.nih.gov/29112007/">around 20%</a> go on to develop chronic low back pain (lasting more than three months).</p> <p>There is a <a href="https://bjsm.bmj.com/content/54/12/698">common view</a> that chronic low back pain is caused by permanent tissue damage including “wear and tear”, disc degeneration, disc bulges and arthritis of the spine. This “damage” is often described as resulting from injury and loading of the spine (such as bending and lifting), ageing, poor posture and weak “core” muscles.</p> <p>We’re often told to “protect” our back by sitting tall, bracing the core, keeping a straight back when bending and lifting, and avoiding movement and activities that are painful. Health practitioners often <a href="https://theconversation.com/having-good-posture-doesnt-prevent-back-pain-and-bad-posture-doesnt-cause-it-183732">promote and reinforce these messages</a>.</p> <p>But this is <a href="https://bjsm.bmj.com/content/54/12/698">not based on evidence</a>. An emerging treatment known as <a href="https://pubmed.ncbi.nlm.nih.gov/29669082/">cognitive functional therapy</a> aims to help patients undo some of these unhelpful and restrictive practices, and learn to trust and move their body again.</p> <h2>People are often given the wrong advice</h2> <p>People with chronic back pain are often referred for imaging scans to detect things like disc degeneration, disc bulges and arthritis.</p> <p>But these findings are very common in people <em>without</em> low back pain and research shows they <a href="https://pubmed.ncbi.nlm.nih.gov/24276945/">don’t accurately predict</a> a person’s current or future experience of pain.</p> <p>Once serious causes of back pain have been ruled out (such as cancer, infection, fracture and nerve compression), there is <a href="https://pubmed.ncbi.nlm.nih.gov/27745712/">little evidence</a> scan findings help guide or improve the care for people with chronic low back pain.</p> <p>In fact, scanning people and telling them they have arthritis and disc degeneration can <a href="https://pubmed.ncbi.nlm.nih.gov/33748882/">frighten them</a>, resulting in them avoiding activity, worsening their pain and distress.</p> <p>It can also lead to potentially harmful treatments such as <a href="https://pubmed.ncbi.nlm.nih.gov/27213267/">opioid</a> pain medications, and invasive treatments such as spine <a href="https://pubmed.ncbi.nlm.nih.gov/19127161/">injections</a>, spine <a href="https://pubmed.ncbi.nlm.nih.gov/12709856/">surgery</a> and battery-powered electrical stimulation of spinal nerves.</p> <h2>So how should low back pain be treated?</h2> <p>A complex range of factors <a href="https://pubmed.ncbi.nlm.nih.gov/29112007/">typically contribute</a> to a person developing chronic low back pain. This includes over-protecting the back by avoiding movement and activity, the belief that pain is related to damage, and negative emotions such as pain-related fear and anxiety.</p> <p>Addressing these factors in an individualised way is <a href="https://pubmed.ncbi.nlm.nih.gov/29573871/">now considered</a> best practice.</p> <p><a href="https://pubmed.ncbi.nlm.nih.gov/15936976/">Best practice care</a> also needs to be person-centred. People suffering from chronic low back pain want to be heard and validated. They <a href="https://pubmed.ncbi.nlm.nih.gov/35384928/">want</a> to understand why they have pain in simple language.</p> <p>They want care that considers their preferences and gives a safe and affordable pathway to pain relief, restoring function and getting back to their usual physical, social and work-related activities.</p> <p>An example of this type of care is cognitive functional therapy.</p> <h2>What is cognitive functional therapy?</h2> <p><a href="https://pubmed.ncbi.nlm.nih.gov/29669082/">Cognitive functional therapy</a> is about putting the person in the drivers’ seat of their back care, while the clinician takes the time to guide them to develop the skills needed to do this. It’s led by physiotherapists and can be used once serious causes of back pain have been ruled out.</p> <p>The therapy helps the person understand the unique contributing factors related to their condition, and that pain is usually not an accurate sign of damage. It guides patients to relearn how to move and build confidence in their back, without over-protecting it.</p> <p>It also addresses other factors such as sleep, relaxation, work restrictions and engaging in physical activity based on the <a href="https://www.restorebackpain.com/patient-journey">person’s preferences</a>.</p> <p>Cognitive functional therapy usually involves longer physiotherapy sessions than usual (60 minutes initially and 30-45 minute follow-ups) with up to seven to eight sessions over three months and booster sessions when required.</p> <h2>What’s the evidence for this type of therapy?</h2> <p>Our recent clinical trial of cognitive functional therapy, published in <a href="https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(23)00441-5/fulltext">The Lancet</a>, included 492 people with chronic low back pain. The participants had pain for an average of four years and had tried many other treatments.</p> <p>We first trained 18 physiotherapists to competently deliver cognitive functional therapy across Perth and Sydney over six months. We compared the therapy to the patient’s “usual care”.</p> <p>We found large and sustained improvements in function and reductions in pain intensity levels for people who underwent the therapy, compared with those receiving usual care.</p> <p>The effects remained at 12 months, which is unusual in low back pain trials. The effects of most recommended interventions such as exercise or psychological therapies are <a href="https://pubmed.ncbi.nlm.nih.gov/34580864/">modest in size</a> and tend to be of <a href="https://pubmed.ncbi.nlm.nih.gov/32794606/">short duration</a>.</p> <p>People who underwent cognitive functional therapy were also more confident, less fearful and had a more positive mindset about their back pain at 12 months. They also liked it, with 80% of participants satisfied or highly satisfied with the treatment, compared with 19% in the usual care group.</p> <p>The treatment was as safe as usual care and was also cost-effective. It saved more than A$5,000 per person over a year, largely due to increased participation at work.</p> <h2>What does this mean for you?</h2> <p>This trial shows there are safe, relatively cheap and effective treatments options for people living with chronic pain, even if you’ve tried other treatments without success.</p> <p><a href="https://www.restorebackpain.com/cft-clinicians">Access to clinicians</a> trained in cognitive functional therapy is currently limited but will expand as training is scaled up.</p> <p>The costs depend on how many sessions you have. Our studies show some people improve a lot within two to three sessions, but most people had seven to eight sessions, which would cost around A$1,000 (aside from any Medicare or private health insurance rebates). <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/207009/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /></p> <p><em><a href="https://theconversation.com/profiles/peter-osullivan-48973">Peter O'Sullivan</a>, Professor of Musculoskeletal Physiotherapy, <a href="https://theconversation.com/institutions/curtin-university-873">Curtin University</a>; <a href="https://theconversation.com/profiles/jp-caneiro-1463060">JP Caneiro</a>, Research Fellow in physiotherapy, <a href="https://theconversation.com/institutions/curtin-university-873">Curtin University</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>, and <a href="https://theconversation.com/profiles/peter-kent-1433302">Peter Kent</a>, Adjunct Associate Professor of Physiotherapy, <a href="https://theconversation.com/institutions/curtin-university-873">Curtin 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/what-is-cognitive-functional-therapy-how-can-it-reduce-low-back-pain-and-get-you-moving-207009">original article</a>.</em></p>

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Long COVID: How lost connections between nerve cells in the brain may explain cognitive symptoms

<p>For a portion of people who get COVID, symptoms continue for <a href="https://www.ons.gov.uk/peoplepopulationandcommunity/healthandsocialcare/conditionsanddiseases/bulletins/prevalenceofongoingsymptomsfollowingcoronaviruscovid19infectionintheuk/6october2022" target="_blank" rel="noopener">months or even years</a> after the initial infection. This is commonly referred to as “long COVID”.</p> <p>Some people with long COVID complain of “<a href="https://theconversation.com/what-is-and-what-isnt-brain-fog-190537" target="_blank" rel="noopener">brain fog</a>”, which includes a wide variety of cognitive symptoms affecting memory, concentration, sleep and speech. There’s also growing concern about findings that people who have had COVID are at <a href="https://www.thelancet.com/journals/lanpsy/article/PIIS2215-0366(22)00260-7/fulltext" target="_blank" rel="noopener">increased risk</a> of developing brain disorders, such as dementia.</p> <p>Scientists are working to understand how exactly a COVID infection affects the human brain. But this is difficult to study, because we can’t experiment on living people’s brains. One way around this is to create <a href="https://www.nature.com/articles/s41578-021-00279-y" target="_blank" rel="noopener">organoids</a>, which are miniature organs grown from stem cells.</p> <p>In a <a href="https://www.nature.com/articles/s41380-022-01786-2.pdf" target="_blank" rel="noopener">recent study</a>, we created brain organoids a little bigger than a pinhead and infected them with SARS-CoV-2, the virus that causes COVID-19.</p> <p>In these organoids, we found that an excessive number of synapses (the connections between brain cells) were eliminated – more than you would expect to see in a normal brain.</p> <p>Synapses are important because they allow neurons to communicate with each other. Still, the elimination of a certain amount of inactive synapses is part of normal brain function. The brain essentially gets rid of old connections when they’re no longer needed, and makes way for new connections, allowing for more efficient functioning.</p> <p>One of the crucial functions of the brain’s immune cells, or <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5768411/" target="_blank" rel="noopener">microglia</a>, is to prune these inactive synapses.</p> <p>The exaggerated elimination of synapses we saw in the COVID-infected models could explain why some people have cognitive symptoms as part of long COVID.</p> <p><strong>Parallels with neurodegenerative disorders</strong></p> <p>Interestingly, this pruning process is believed to go awry in several disorders affecting the brain. In particular, excessive elimination of synapses has recently been linked to <a href="https://www.nature.com/articles/s41593-018-0334-7" target="_blank" rel="noopener">neurodevelopmental disorders</a> such as <a href="https://www.nature.com/articles/s41593-018-0334-7" target="_blank" rel="noopener">schizophrenia</a>, as well as <a href="https://www.frontiersin.org/articles/10.3389/fncel.2019.00063/full" target="_blank" rel="noopener">neurodegenerative disorders</a> such as Alzheimer’s and Parkinson’s disease.</p> <p>By sequencing the RNA of single cells, we could study how different cell types in the organoid responded to the virus. We found that the pattern of genes turned on and off by the microglia in our COVID-infected organoids mimicked changes seen in neurodegenerative disorders.</p> <p>This may go some way in explaining the link between COVID and the risk of developing certain neurological disorders.</p> <figure class="align-center "><img src="https://images.theconversation.com/files/491380/original/file-20221024-17-9wi5pg.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/491380/original/file-20221024-17-9wi5pg.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=338&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/491380/original/file-20221024-17-9wi5pg.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=338&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/491380/original/file-20221024-17-9wi5pg.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=338&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/491380/original/file-20221024-17-9wi5pg.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=425&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/491380/original/file-20221024-17-9wi5pg.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=425&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/491380/original/file-20221024-17-9wi5pg.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=425&amp;fit=crop&amp;dpr=3 2262w" alt="" /><figcaption><span class="caption">A brain organoid used in our study. You can see the microglial cells in red.</span> <span class="attribution"><span class="source">Sellgren lab</span>, <span class="license">Author provided</span></span></figcaption></figure> <p><strong>A possible target for treatment</strong></p> <p>One limitation of our research is that our organoid models closely resemble the foetal or early brain, rather than the adult brain. So we can’t say for sure whether the changes we noted in our study will necessarily be reflected in the adult brain.</p> <p>However, some <a href="https://pubmed.ncbi.nlm.nih.gov/33248159/" target="_blank" rel="noopener">post-mortem</a> and <a href="https://pubmed.ncbi.nlm.nih.gov/35255491/" target="_blank" rel="noopener">imaging studies</a> report neuronal death and reduction in grey matter thickness in COVID patients, which hints at similar instances of synapse loss caused by an infection in adults.</p> <p>If this proves to be a fruitful line of enquiry, we believe our findings could point to a mechanism contributing to persisting cognitive symptoms after COVID and other viral infections that affect the brain.</p> <p>SARS-CoV-2 is an RNA virus and similar <a href="https://pubmed.ncbi.nlm.nih.gov/27337340/" target="_blank" rel="noopener">processes</a> have been seen in mice infected with other RNA viruses that can also cause residual cognitive symptoms, such as the <a href="https://pubmed.ncbi.nlm.nih.gov/31235930/" target="_blank" rel="noopener">West Nile virus</a>.</p> <p>From here we want to study how different drugs could inhibit the changes we saw in the infected models, hopefully paving the way towards effective treatments. In <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6410571/">other research</a>, we’ve observed that an antibiotic called minocycline can reduce the degree to which microglia prune synapses in a dish. So we want to see if this drug can help in our brain organoid models following SARS-CoV-2 infection.<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/192702/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /></p> <p><em>Writen by Samudyata and </em><em>Carl Sellgren</em><em>. Republished with permission from <a href="https://theconversation.com/long-covid-how-lost-connections-between-nerve-cells-in-the-brain-may-explain-cognitive-symptoms-192702" target="_blank" rel="noopener">The Conversation</a>.</em></p> <p><em>Image: Getty Images</em></p>

Mind

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High score: Video game play linked to better cognitive performance

<p>Children playing video games for more than three hours a day score better on cognitive performance compared to non-gamers.</p> <p>A study involving more than 1,800 children aged nine and ten by researchers at the University of Vermont in the United States, is believed to be the largest investigation looking at the association between <a href="https://cosmosmagazine.com/people/good-games/" target="_blank" rel="noreferrer noopener">video games</a>, cognition and brain function. </p> <p>The researchers found children who played more than 21 hours of video games per week recorded better scores for <a href="https://cosmosmagazine.com/technology/can-games-tell-if-you-are-impulsive/" target="_blank" rel="noreferrer noopener">response inhibition</a> and working memory than those who never played. The article is <a href="https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2797596?utm_source=For_The_Media&amp;utm_medium=referral&amp;utm_campaign=ftm_links&amp;utm_term=102422" target="_blank" rel="noreferrer noopener">published</a> in JAMA Network Open.</p> <p>Lead author Dr Bader Chaarani told Cosmos, “it makes sense that if you consider the brain is like a muscle, the more you train it, the better it performs.” </p> <p>Impulse control is considered important as it is linked to substance use in adolescence, while working memory is connected to IQ and language processing, Chaarani says.</p> <p>In the study, the children performed two tasks inside an MRI scanner. The first was a ‘stop signal task’ measuring impulse control. The task required children to press a button when arrows pointed left or right, but not press anything when the arrows point up. The second, a working memory task showed children pictures of faces and tested their recall.</p> <p>Children were also tested outside the scanner using oral and verbal tasks.</p> <p>In contrast to the findings of other research, the study did not find any significant difference between gamers and non-gamers in terms of mental health or behaviour. </p> <div class="newsletter-box"> <div id="wpcf7-f6-p220302-o1" class="wpcf7" dir="ltr" lang="en-US" role="form"> </div> </div> <p>Chaarani says, “many parents today are concerned about the effects of video games on their children’s health and development, and as these games continue to proliferate among young people, it is crucial that we better understand both the positive and negative impact that such games may have.”</p> <p>In Australia, 78% of children and teenagers play video games, averaging 106 minutes per day, according to <a href="https://igea.net/wp-content/uploads/2021/10/DA22-Report-FINAL-19-10-21.pdf" target="_blank" rel="noreferrer noopener">research commissioned</a> by the Interactive Games and Entertainment Association.</p> <p>In the University of Vermont study, non-video gamers (who spent zero hours a week playing games) and gamers (who played more than 21 hours a week) were recruited from a mix of 21 public, private and charter schools across the United States.</p> <p>The two groups did not differ in terms of characteristics such as age, BMI or IQ. However, the gamers group had a higher share of boys, and lower parental income on average.</p> <p>The research forms part of the <a href="https://abcdstudy.org" target="_blank" rel="noreferrer noopener">Adolescent Brain Cognitive Development Study</a>, the largest long-term study of brain development and child health in the United States. This allows children to be tracked over time into early adulthood to see if changes in video gaming behaviour are linked to changes in cognitive skills, brain activity, behaviour, and mental health.</p> <p>While the results showed an association between playing video games and higher cognitive performance, the paper notes it does not evidence for causality. This will be the focus of further research, given the Adolescent Brain Cognitive Development Study follows children every two years.</p> <p>Chaarani says they also plan to look at the effect of video game genre in future work. The current study did not differentiate by the type of video games children played, whether puzzle games, action adventure, sports, simulation or shooters; or single versus multi-player games. </p> <p>“There are some smaller studies reporting that different types of games may engage different areas in the brain, different functions of the brain… but because of the sample size we cannot trust them enough,” he says.</p> <p>“For the nine and ten years old, we’ve been looking at surveys done internationally. So, these kids tend to play more fast-paced games like action, adventure and shooters that give you immediate reward rather than slow paced games.”</p> <p><img id="cosmos-post-tracker" style="opacity: 0; height: 1px!important; width: 1px!important; border: 0!important; position: absolute!important; z-index: -1!important;" src="https://syndication.cosmosmagazine.com/?id=220302&amp;title=High+score%3A+Video+game+play+linked+to+better+cognitive+performance" width="1" height="1" /></p> <div id="contributors"> <p><em><a href="https://cosmosmagazine.com/technology/high-score-video-game-play-linked-to-better-cognitive-performance/" target="_blank" rel="noopener">This article</a> was originally published on Cosmos Magazine and was written by Petra Stock.</em></p> <p><em>Image: Getty Images</em></p> </div>

Technology

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Vitamin C deficiency linked to cognitive impairment

<p dir="ltr">A new study has found a link between poor brain function and how much Vitamin C older people have, and that a deficiency could have some serious effects on the brain.</p> <p dir="ltr">Cognitive impairment is common among older, hospitalised patients, and can result in poor memory and concentration, as well as finding decision-making difficult.</p> <p dir="ltr">The team from Flinders University in Adelaide tested the cognitive function and vitamin C level of 160 people over the age of 75 who were admitted to the university’s medical centre.</p> <p dir="ltr">From this, 91 patients were found to have cognitive impairment, and 42 of this group were found to have such low levels of vitamin C - below 11 micromoles per litre - they were at risk of developing scurvy.</p> <p dir="ltr">“Our findings showed that cognitive function scores were significantly lower among patients who were vitamin C deficient, with further analysis suggesting vitamin C deficiency was almost three times more likely to be associated with cognitive impairment after adjustment for other factors,” Associate Professor Yogesh Sharma, the study’s lead author, <a href="https://www.scimex.org/newsfeed/low-vitamin-c-linked-to-cognitive-impairment-in-older-australians" target="_blank" rel="noopener">said</a>.</p> <p dir="ltr">The researchers stressed that the two were associated, not that vitamin C deficiency causes cognitive impairment.</p> <p dir="ltr">They also noted that many of the symptoms of low vitamin C levels - including skin issues, bruising and bleeding - are common in this age group because of a number of conditions.</p> <p dir="ltr">“It may, therefore, be difficult to diagnose vitamin C deficiency solely on looking for these particular symptoms in older hospitalised patients,” Associate Professor Sharma said.</p> <p dir="ltr">“Given we know vitamin C deficiency is common among older hospitalised patients, medical professionals need to remain vigilant for this condition and confirm a patient’s vitamin C status in suspected cases.”</p> <p dir="ltr">With this link, the researchers said they will need to conduct more studies to confirm the link and determine whether replacing a patient’s vitamin C levels could help prevent or reverse cognitive impairment.</p> <p dir="ltr">The study was published in the journal <em><a href="https://doi.org/10.3390/antiox11030463" target="_blank" rel="noopener">Antibiotics</a></em>.</p> <p><span id="docs-internal-guid-2ab5757b-7fff-e419-e985-eb63d06eb2d3"></span></p> <p dir="ltr"><em>Image: Getty Images</em></p>

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Air pollution may impair cognitive function

<div class="copy"> <p>A joint China-US research team has found that exposure to even short-term air pollution may impair cognitive function.</p> <p>Air pollution is a growing cause of sickness and death globally, with a <a href="https://cosmosmagazine.com/climate/air-pollution-pandemic-warning/" target="_blank" rel="noreferrer noopener">recent study</a> estimating that it caused an extra 8.8 million premature deaths in 2015, surpassing the 7.2 million caused by tobacco smoking. It has well-established effects on the lungs and the heart – it has been linked with spikes in <a href="http://jaha.ahajournals.org/content/5/5/e002742" target="_blank" rel="noreferrer noopener">heart attacks, strokes</a> and <a href="http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0180522" target="_blank" rel="noreferrer noopener">asthma</a>, and is a carcinogen known to cause lung cancer.</p> <p>Increasingly, research is also associating air pollution with other health impacts including <a href="https://cosmosmagazine.com/biology/kidney-disease-linked-to-air-pollution/" target="_blank" rel="noreferrer noopener">kidney disease</a>, <a href="https://cosmosmagazine.com/climate/could-air-pollution-contribute-to-psychiatric-illness/" target="_blank" rel="noreferrer noopener">psychiatric illness</a> and <a href="https://cosmosmagazine.com/biology/air-pollution-link-to-alzheimer-s-mooted/" target="_blank" rel="noreferrer noopener">Alzheimer’s</a>.</p> <p><strong>What causes air pollution?</strong></p> <ul> <li>Air pollution is the release of pollutants into the air that have detrimental effects on human or planetary health.</li> <li>It can have natural sources, such as desert dust or bushfire smoke, but is increasingly created by humans, primarily from burning fossil fuels.</li> <li>There are two main types: smog occurs when emissions from burning fossil fuels react with sunlight, while soot is made up of tiny particles made up of smoke, soil, dust, allergens or chemicals. Anything that combusts fossil fuels can cause this, including vehicle exhaust, power plants, incinerators and more.</li> </ul> <p>Now, in a new study <a href="https://doi.org/10.1038/s43587-021-00060-4" target="_blank" rel="noreferrer noopener">published</a> in the journal <em>Nature Ageing</em>, researchers have linked poor air quality with decreased brain health.</p> <p>The team studied a sample of 954 Caucasian males (with an average age of 70) from the Boston area in the US, who were participants in the Veterans Affairs Normative Aging Study. Their cognitive function was measured by a series of assessments to test their attention, learning and memory, as well as an screening to help detect early signs of dementia.</p> <p>This was compared to the average levels of fine particulate matter (PM2.5, smaller than 2.5 micrometres in size) in the area, both on the day of each test and in the 28 days prior. The team found the participants tended to score lower when levels of PM2.5 were higher in the month before the tests – even when levels were still below what is considered as “hazardous”.</p> <p>“The findings were quite startling,” write cognitive health researchers Joanne Ryan and Alice J. Owen, in an <a href="https://dx.doi.org/10.1038/s43587-021-00062-2" target="_blank" rel="noreferrer noopener">accompanying article</a>. “Even relatively small increases in the levels of PM2.5 in the 3–4 weeks prior to testing were associated with consistently worse cognitive performance.”</p> <p>Ryan and Owen, both from Monash University in Australia and both not involved in the study, point out that Boston “has by no means the worst air quality in the USA or the world, and yet significant detrimental effects of air pollution on cognitive function were observed”.</p> <p>While a decline in brain function in older adults is common, it can be exacerbated – and accelerated – by environmental factors. Evidence is <a href="https://doi.org/10.3233/jad-180631" target="_blank" rel="noreferrer noopener">mounting</a> that air pollution could be a risk factor for dementia and could, over the long term, be <a href="https://dx.doi.org/10.1016%2Fj.neuro.2016.06.004" target="_blank" rel="noreferrer noopener">associated</a> with cognitive declines.</p> <p>“The results of the current study are especially important because they provide some of the first evidence that even relatively low-level, short-term increases in PM2.5 are detrimental for thinking and memory, as well as global cognition in older adults,” Ryan and Owen write.</p> <p>The results may point to a general trend in the larger population, given that air pollution <a href="https://www.unicef.org/environment/files/Danger_in_the_Air.pdf" target="_blank" rel="noreferrer noopener">affects brain development</a> in kids, and women seem to be <a href="https://doi.org/10.1289/ehp.0900994" target="_blank" rel="noreferrer noopener">more strongly affected</a> than men.</p> <p>Interestingly, the researchers also found that the participants who were prescribed NSAIDs (nonsteroidal anti-inflammatory drugs, such as aspirin) were less adversely affected. This may be because the health impacts of air pollution tend to involve activating the body’s inflammatory response. But caution is warranted; there may be many other differences between participants who do and don’t use NSAIDs.</p> <p>This study also had a relatively small sample size and focused on a certain geographical area, so further research is needed to solidify the link between air pollution and cognitive function.</p> <p>However, Ryan and Owen emphasise the importance of the results.</p> <p>“The implications for public health, and consequent health, societal and economic costs of air pollution, are immense,” they write. “This should be a further wake-up call about the urgent need for action.</p> <p>“It has been estimated that 90% of the world’s population breathe polluted air. Breathing clean air is fundamental to our health but represents a global challenge and one of substantial inequity, disproportionally affecting the most vulnerable.”</p> <p><em>Image credits: Getty Images</em></p> <p><em><img id="cosmos-post-tracker" style="opacity: 0; height: 1px!important; width: 1px!important; border: 0!important; position: absolute!important; z-index: -1!important;" src="https://syndication.cosmosmagazine.com/?id=149918&amp;title=Air+pollution+may+impair+cognitive+function" width="1" height="1" data-spai-target="src" data-spai-orig="" data-spai-exclude="nocdn" /></em></div> <div id="contributors"> <p><em>This article was originally published on <a href="https://cosmosmagazine.com/health/air-pollution-may-impair-cognitive-function/" target="_blank" rel="noopener">cosmosmagazine.com</a> and was written by Lauren Fuge. </em></p> </div>

Mind

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How this New Zealand songbird provides insights into cognitive evolution

<p>When we think about animals storing food, the image that usually comes to mind is a squirrel busily hiding nuts for the winter.</p> <p>We don’t usually think of a small songbird taking down an enormous invertebrate, tearing it into pieces and hiding these titbits in the branches of trees to snack on later in the day. But this is also a form of caching behaviour, where food is handled and stored for later consumption.</p> <p>For caching animals, the ability to recall where food is hidden is crucial for survival. My <a href="https://www.sciencedirect.com/science/article/abs/pii/S0960982219303252">research</a> into the spatial memory performance of a caching songbird, the New Zealand robin (<em>Petroica longipes</em>), shows male birds with superior memory abilities also have better breeding success.</p> <p style="text-align: center;"><img src="https://images.theconversation.com/files/298439/original/file-20191024-119449-v1ha09.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></p> <p style="text-align: center;"><em> <span class="caption">Male toutouwai with better spacial memory also raise more chicks.</span> <span class="attribution"><span class="source">Supplied</span>, <a href="http://creativecommons.org/licenses/by-nd/4.0/" class="license">CC BY-ND</a></span></em></p> <p style="text-align: left;"><strong>Why memory matters</strong></p> <p>There’s no argument that New Zealand is home to a host of unusual birds, including the nocturnal, flightless parrot kākāpō (<em>Strigops habroptila</em>), or the hihi (<em>Notiomystis cincta</em>), the <a href="https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1474-919X.1996.tb08834.x">only bird in the world known to mate face to face</a>.</p> <p>By outward appearances, the small, grey toutouwai (Māori name for <em>P. longipes</em>) is not particularly remarkable. But its noteworthy behaviour includes <a href="https://www.doc.govt.nz/globalassets/documents/science-and-technical/docts13.pdf">feasting on some of the world’s largest invertebrates</a>. There is only so much of a 30cm earthworm a 30g bird can eat, and rather than waste the leftovers, toutouwai will cache any surplus prey they don’t want to eat immediately.</p> <p style="text-align: right;"><img style="display: block; margin-left: auto; margin-right: auto;" src="https://images.theconversation.com/files/298440/original/file-20191024-119463-1bfg3en.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></p> <p style="text-align: center;"><em><span class="caption">Toutouwai are the only known caching species in New Zealand.</span></em></p> <p>An accurate <a href="https://www.annualreviews.org/doi/abs/10.1146/annurev-ecolsys-110512-135904">spatial memory is therefore crucial</a> for recovering caches and it has long been assumed that spatial memory is under <a href="https://www.ncbi.nlm.nih.gov/pubmed/2919184">strong selection pressure in caching species</a>.</p> <p>For selection to act on a trait, there must be individual variation that is passed onto offspring and that influences survival and reproduction. While researchers had looked at how spatial memory influences <a href="https://www.sciencedirect.com/science/article/abs/pii/S0960982219300077">winter survival in caching mountain chickadees</a>, no one had examined whether memory performance influences reproductive success in any caching species. Our <a href="https://www.sciencedirect.com/science/article/abs/pii/S0960982219303252">research</a> tackles this issue.</p> <p><strong>Measuring memory in the wild</strong></p> <p>We measured the spatial memory performance of 63 wild toutouwai during winter. We gave the birds a circular puzzle that had a mealworm treat hidden inside one of eight compartments. For each bird, we put the puzzle at the same location in their territory several times in a single day, with the food always hidden in the same spot.</p> <p style="text-align: center;"><img style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.theconversation.com/static_files/files/765/spatial_test.gif?1571875385" alt="" width="100%" /> <em><span class="caption">Wild toutouwai looking for a hidden mealworm treat.</span> <span class="attribution"><span class="source"> SOURCE </span></span></em></p> <p>Over time, toutouwai learned the location of the hidden treat and began opening fewer compartments to find the mealworm. We then followed these same birds through the next breeding season and looked at whether their spatial memory performance (measured as the number of compartments they had to open to find the mealworm) was linked to their ability to feed chicks, and whether it influenced the survival of their offspring.</p> <p>Our results suggested that spatial memory performance influences reproductive success in toutouwai. Males with more accurate memory performance successfully raised more offspring per nest and fed larger prey to chicks.</p> <p>By contrast, we did not find the same patterns for females. This is the first evidence that spatial memory is linked to reproductive fitness in a food caching species.</p> <p><strong>Evolving intelligence</strong></p> <p>If there is such a great benefit for males in having an accurate recall of locations, why aren’t all males the best they can possibly be in terms of spatial memory performance? In other words, why didn’t all the male toutouwai we tested ace our memory task?</p> <p>Intriguingly, our results suggest a role for conflict between the sexes in maintaining variation in cognitive ability. We found no effect of memory performance on female reproductive success, suggesting that the cognitive abilities that influence reproductive behaviour may well differ for females.</p> <p>Such a difference between the sexes would ultimately constrain the effect of selection on male spatial memory, preventing strong directional selection from giving rise to uniformly exceptional memory in our toutouwai population.</p> <p>Our work produced some tantalising evidence for both the causes and consequences of variation in cognitive ability, but it also raises several more questions. For example, while we’ve shown that memory performance matters for males, we still need to examine how it influences caching behaviour.</p> <p>Another mystery that remains is why spatial memory ability may have less of an influence on female toutouwai fitness. One possibility is that longer-term spatial memory for specific locations (rather than the short-term memory we measured) may matter more for female reproduction, because females do all of the nest building and incubation.</p> <p>So far, we’ve only provided one piece of the puzzle. To get the full picture of how cognition evolves, we have many more avenues left to explore.<!-- 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; text-shadow: none !important;" src="https://counter.theconversation.com/content/125304/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: http://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/rachael-shaw-764893">Rachael Shaw</a>, Rutherford Discovery Fellow, <a href="http://theconversation.com/institutions/victoria-university-of-wellington-1200">Victoria University of Wellington</a></em></p> <p><em>This article is republished from <a href="http://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/a-small-new-zealand-songbird-that-hides-food-for-later-use-provides-insights-into-cognitive-evolution-125304">original article</a>.</em></p>

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Could cochlear implants improve your cognitive function?

<p>Cochlear implants could be associated with improved speech perception and cognitive function in adults with profound hearing loss who are 65 years or older. Here is a comprehensive break-down of the associated options.</p> <p><strong>What is a cochlear implant?</strong></p> <p>It is a small electronic hearing device that provides a sense of sound to profoundly deaf patients by electronically stimulating the hearing nerve and bypassing damaged parts of the inner ear. It has both internal and external parts. The complex technology essentially emulates the function of an ear to receive, process and transmit sound waves.</p> <p>The external part of a cochlear implant is placed just above the ear and involves a microphone and sound processor, which selects and arranges sound. While the transmitter converts the signals from the processor and converts them into electric impulses. The impulses are sent to the internal part of the implant, which is put in place surgically under general anaesthesia. This internal part involves a receiver and magnet under the skin behind the ear and a series of electrodes placed in the cochlear. The electrodes collect the impulses and send them to different regions of the auditory nerve.</p> <p>A cochlear implant for someone who is considered deaf is a useful representation of sound in the environment and helps them to understand speech. It bypasses the damaged portions of the ear and directly stimulates the auditory nerve. Although it takes some time to learn or relearn, hearing by a cochlear implant allows the user to recognise warning signals, understand environmental noises and even have conversations.</p> <p><strong>Who needs them?</strong></p> <p>Cochlear implants are useful for children or adults who are deaf or severely hard-of-hearing. Many children who are deaf at birth receive cochlear implants from 12 months of age. However, adults who lose hearing later in life also frequently use the devices. These individuals are then able to associate the provided signals with sounds they remember, negating the need to learn lip-reading or sign language.</p> <p>People over the age of 65 years are three times more likely to have hearing loss than younger adults. This is largely due to the damage we expose our ears to on a day-to-day basis. Loud or excessive noise damages the hair cells in the cochlear, which unfortunately don’t regrow. As well as gradual hearing loss, many people may also have incidents that cause them to suddenly lose their hearing, meaning they will also require the assistance of these devices.</p> <p><strong>Implantation</strong></p> <p>Use of a cochlear implant requires both a surgical procedure and significant therapy. Cochlear implantations are almost always safe, however, as with all surgical procedures there is always a small risk. Cochlear implants are quite costly, and the learning process is quite lengthy, however, the benefits are considered to be usually worthwhile.</p> <p><strong>Cochlear implant or hearing aid?</strong></p> <p>Hearing aids simply amplify sounds and can be easily fitted on the external part of the ear, requiring no surgical procedure. There are a variety of hearing aids available, which generally consist of a microphone, amplifier, miniature loudspeaker and battery. Hearing aids pick up and amplify surrounding sounds and help to make speech more intelligible. People with profound hearing loss or residual low frequency hearing will likely receive no benefit from hearing aids and will be considered for a cochlear implant.</p> <p><strong>Costs</strong></p> <p>Cochlear implants are an expensive piece of technology, possible adding up to around $40,000. Depending on your state Department of Health, funding is usually provided for a limited number of cochlear implants per year. Most private health fund cover the costs of the implant and hospital expenses and holders of Gold Veteran Affairs cards are usually fully covered.</p> <p>As well as financial costs, time costs must also be taken in to consideration. The assessment period usually takes three months, and then there is usually a few week’s wait for surgery. After surgery, the MAP (the programming for the cochlear implant) will need to be adjusted to the needs of its user.</p> <p><strong>Benefits</strong></p> <p>Several studies have shown benefits. One that adult cochlear implant patients allow a more marked improvement physically, psychologically and socially than hearing aid patients. This means that cochlear implants can bring as much benefit to those with profound hearing loss as hearing aids bring to those with less severe hearing loss. Another found that cochlear implants vastly improve the quality of life of deaf patients over 50. Cochlear implants are found to be a cost-effective solution in this age group, due to their increase in health and emotional-related quality of life. Increases in speech perception scores showed a strong correlation with magnitude of health utility gains.</p> <p>More recent research which was published online by JAMA Otolaryngology - Head and Neck Surgery. This research indicates that cochlear implantation is positively associated with improved cognitive function and speech perception in adults 65 years and older with profound hearing loss. Hearing impairment correlates strongly with cognitive decline, and in cases where hearing aids are not sufficient, cochlear implantation is seen to be highly beneficial for older patients.</p> <p>This study also showed that cochlear implants not only improve speech perception – in both quiet and noise – however, they can also improve quality of life and show less incidence of depression. More than 80% of the 94 patients in the study with impaired cognitive function improved their brain function scores one year after implantation.</p> <p><strong>Who to see</strong></p> <p>If you have suddenly or gradually become profoundly hard-of-hearing, it is important to seek professional medical advice immediately. Help is available and seeking advice early could increase your quality of life.</p> <p>Options are to either visit an otolaryngologist, a doctor specialising in the diagnosis of ear, nose and throat diseases; an audiologist, who has specialised training in identifying and measuring the type and degree of hearing loss and recommends option; or a hearing aid specialist, who conducts and evaluate basic tests and offers counselling. Because cochlear implantation is for more serious hearing loss, you will need to see a specialist and then be referred to receive surgical treatment.</p> <p><em>Written by Greta Mayr. Republished with permission of <a href="https://www.wyza.com.au/articles/health/could-cochlear-implants-could-improve-your-cognitive-function.aspx">Wyza.com.au.</a></em></p>

Technology

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Eating more of this could slow brain ageing by 11 years

<p>When it comes to eating healthy, you can’t really go wrong with fruit and veg. But just as <a href="/health/body/2016/04/what-is-the-healthiest-fruit/" target="_blank"><strong><span style="text-decoration: underline;">some fruits are healthier than others</span></strong></a>, some vegetables have are more nutrient-dense and have more health benefits than others – namely, leafy greens.</p> <p>Leafy greens – kale, spinach, rocket etc. – have been found not only to help <a href="/health/body/2016/05/foods-to-eat-to-beat-bloating/" target="_blank"><strong><span style="text-decoration: underline;">reduce bloating</span></strong></a>, <a href="/news/news/2016/11/9-foods-that-lower-cholesterol/" target="_blank"><strong><span style="text-decoration: underline;">lower cholesterol</span></strong></a> and <a href="/health/body/2017/02/foods-for-maintaining-healthy-eyes/" target="_blank"><strong><span style="text-decoration: underline;">maintain healthy eyesight</span></strong></a>, but a new study has found they could also slow down brain ageing by up to 11 years.</p> <p><a href="https://www.rush.edu/news/press-releases/daily-leafy-greens-may-slow-cognitive-decline" target="_blank"><strong><span style="text-decoration: underline;">Researchers from the Rush University Medical Centre in Chicago discovered</span></strong></a> that people who eat at least one serve of leafy greens each day experience slower rates of cognitive decline and memory loss.</p> <p>They examined the diets of 960 people with an average age of 81, testing their thinking and memory skills every year for an average of 4.7 years along with how often they consumed a half-cup serving of either spinach, kale or collard greens or a one-cup serving of lettuce.</p> <p>Over the course of the study, the rate of cognitive decline for those who ate the most leafy greens was slower by 0.05 standardised units per year than those who ate the least – in other words, mentally, they were 11 years younger.</p> <p>“Adding a daily serving of green leafy vegetables to your diet may be a simple way to help promote brain health,” study author and nutritional epidemiologist Martha Clare Morris said.</p> <p>“There continue to be sharp increases in the percentage of people with dementia as the oldest age groups continue to grow in number. Effective strategies to prevent dementia are critically needed.”</p> <p>The results were consistent even after taking into account lifestyle factors such as smoking, alcohol consumption, high blood pressure, obesity, education and frequency of physical and mental exercise.</p> <p>So while your daily crossword certainly doesn’t hurt, a nice, big, green salad might be even better for your grey matter.</p>

Mind

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5 expert tips to reduce your risk of cognitive decline with age

<p><em><strong>Hayley Wright is a Research Fellow at Coventry University. Her research focuses on cognitive ageing and the neuropsychology of stroke and dementia.</strong></em></p> <p>Research into how we can <span style="text-decoration: underline;"><strong><a href="https://www.alzheimers.org.uk/news/article/234/dementia_education_on_risk_inspires_people_in_midlife_to_consider_healthier_lifestyles" target="_blank">keep our brains healthy</a></strong></span> as we age has gained momentum in recent years. There is now an increased focus on the changes that we can makes to our health and lifestyle, which may prevent dementia. Here are some things that research has shown reduce a person’s risk of cognitive decline with age.</p> <p><strong>1. Sex</strong></p> <p>Our <span style="text-decoration: underline;"><strong><a href="https://www.ncbi.nlm.nih.gov/pubmed/28645192" target="_blank">latest study</a></strong></span> shows that having more sex is associated with better cognitive function.</p> <p>We recruited 28 men and 45 women, aged between 50 and 83, to take part in our study. We found that those who had sex weekly scored on average 2 per cent higher on some cognitive tests than those who had sex monthly, and 4 per cent higher than those who never had sex. These results were shown on tests of verbal fluency (such as naming as many animals as possible in one minute) and visuo-spatial abilities (drawing familiar objects from memory or copying complex pictures).</p> <p>The association could be the result of the heightened levels of intimacy and companionship inherent in sexual relationships (that is, an increase in social contact), or there could be a purely biological explanation – where regular surges in arousal and release of sex-related hormones (such as oxytocin and dopamine) could be affecting brain function. Of course, as with the age-old nature/nurture debate, our answer could lie in a combination of the social and biological impact of sexual activity.</p> <p><strong>2. Sleep</strong></p> <p>Many studies show that getting enough sleep is important for preventing cognitive decline. A <span style="text-decoration: underline;"><strong><a href="https://www.ncbi.nlm.nih.gov/pubmed/22560827" target="_blank">study</a></strong></span> of cognitively healthy people aged 65 and over showed that daytime napping is associated with a lower risk of cognitive decline at two-year and ten-year follow-ups. Conversely, excessive daytime sleepiness and getting less than six-and-a-half hours of sleep at night are associated with an increased risk of cognitive decline at ten-year follow-up.</p> <p>A more recent <span style="text-decoration: underline;"><strong><a href="http://www.sciencedirect.com/science/article/pii/S1074742716304208" target="_blank">study</a></strong></span> showed that longer sleep duration and poorer sleep quality are both associated with poorer memory in men and women aged 65 and older. These studies all support the advice that we should be getting around eight hours of sleep a night. Sleep disturbance in early adulthood is associated with <span style="text-decoration: underline;"><strong><a href="https://academic.oup.com/innovateage/article/1/suppl_1/156/3902539/SLEEP-EARLIER-IN-LIFE-AND-LATE-LIFE-COGNITION" target="_blank">poorer cognitive function in later life</a></strong></span>, which just goes to shows how sleep can affect our brain health across the lifespan.</p> <p><strong>3. Active leisure</strong></p> <p>New studies show that increased participation in social, mental and physical activities is linked to a <span style="text-decoration: underline;"><strong><a href="https://academic.oup.com/biomedgerontology/article/68/2/205/544371/Late-Life-Leisure-Activities-and-Risk-of-Cognitive" target="_blank">slower rate of cognitive decline</a></strong></span> in older adults. This research shows a “dose-response” relationship, where the more activities we do, the slower the rate of decline becomes.</p> <p>The following activities are good examples of the types of mental, social and physical leisure activities that are good for your brain:</p> <ul> <li>Mental: <span style="text-decoration: underline;"><strong><a href="https://www.alzheimers.org.uk/info/20054/our_achievements/766/have_a_go_at_brain_training" target="_blank">puzzles, games and quizzes</a></strong></span>, reading or even adding up your shopping bill in your head as you go around the supermarket.</li> <li>Social: visiting friends and family, regular phone or email conversations with people, going to the cinema or doing some <span style="text-decoration: underline;"><strong><a href="https://www.gvi.co.uk/resources/over-50s-volunteering/" target="_blank">volunteer work</a></strong></span>.</li> <li>Physical: gardening, housework, walking for around 30 minutes a day, or doing <span style="text-decoration: underline;"><strong><a href="http://www.nhs.uk/Livewell/fitness/Pages/sitting-exercises-for-older-people.aspx" target="_blank">chair-based or sitting exercises</a></strong></span>.</li> </ul> <p><strong>4. Gender equality</strong></p> <p>Studies have found that women may be at reduced risk of cognitive decline, simply because of the activities they choose. There is little that we can do to change our gender, without drastic surgery of course – but we can be aware of the gender stereotypes and expectations that are all around us, which can affect the activities we engage in.</p> <p>In a study of <span style="text-decoration: underline;"><strong><a href="http://content.iospress.com/articles/journal-of-alzheimers-disease/jad130143" target="_blank">Australian older adults</a></strong></span>, there were notable gender differences in the leisure activities that people took part in. For example, women were more likely to engage in social activities, reading and volunteer work, all of which are known to slow cognitive decline. The way that cultures or societies perceive gender roles can affect people’s expectations of themselves and others. If this changes the lifestyle and leisure activities that men and women engage in, then it could well have an <span style="text-decoration: underline;"><strong><a href="http://journals.sagepub.com/doi/full/10.1177/0956797617708634%20" target="_blank">effect on cognitive abilities</a></strong></span> in later life.</p> <p><strong>5. Get an early (in life) start</strong></p> <p>When it comes to doing things to prevent cognitive decline, it’s never too early to start. <span style="text-decoration: underline;"><strong><a href="https://www.ncbi.nlm.nih.gov/pubmed/28359749" target="_blank">Some studies</a></strong></span> show that interventions in older adults have little effect – but that could be because the participants are already suffering from cognitive decline. Studies mapping the rate of cognitive decline in <span style="text-decoration: underline;"><strong><a href="http://www.sciencedirect.com/science/article/pii/S1568163717300235" target="_blank">older participants who do not yet have dementia or cognitive impairment</a></strong></span>, however, show promising results.</p> <p>We all experience cognitive decline as we age. This is a natural process and occurs at different rates for everybody, much like declines in physical abilities with age. But it’s time we started addressing this much earlier in life, rather than waiting till middle age or older. It’s time for us to take a lifelong approach to keeping our brains healthy as we age.</p> <p><em>Written by Hayley Wright. Republished with permission of <a href="http://theconversation.com/The%20Conversation" target="_blank"><strong><span style="text-decoration: underline;">The Conversation</span></strong></a>. <a href="http://theconversation.com/The%20Conversation" target="_blank"></a></em></p>

Mind