Latest / Morning Medical with Dr. Chow / Fiber Benefits, Post-Pandemic Health Trends, and Cold-Water Immersion Insights

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Fiber Benefits, Post-Pandemic Health Trends, and Cold-Water Immersion Insights · Morning Medical with Dr. Chow

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Welcome to Morning Medical with Doctor Chow, your daily dose of the latest health and
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medical news from around the world.
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I'm Doctor Chi-Ming Chow, your host, and today we're diving into some intriguing discoveries
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about dietary fiber and its role in protecting our bodies from sugar damage.
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A new study from the University of California, Irvine, has shed light on how dietary fiber can
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shield our bodies from the harmful effects of sugar, particularly fructose.
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This research, published in the journal Nature Metabolism, highlights the role of inulin, a
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naturally occurring fiber found in vegetables like onions, garlic, and artichokes.
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The researchers discovered that inulin can reshape the bacteria living in our gut,
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enabling them to metabolize fructose before it reaches the liver.
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Doctor Cholsoon Jang and his team at UCI's Nutrient Metabolism and Disease Laboratory
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found that when we consume inulin, it changes the gut bacteria to promote the consumption of
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harmful dietary fructose.
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This means that the fructose is metabolized in the small intestine, preventing it from
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spilling over to the liver, where it can cause fat buildup and lead to fatty liver disease.
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What's fascinating is that once these bacteria are "primed" by inulin, they can even reverse
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signs of fatty liver disease.
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They reduce fat accumulation and boost the liver's natural antioxidants, providing a new
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level of protection not just in digestion but also in how the body handles sugar at a
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molecular level.
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This study emphasizes that not all calories are created equal.
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Even if someone appears healthy and isn't overweight, they can still experience liver
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stress and insulin resistance if their gut microbes aren't equipped to handle excess
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fructose.
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The findings suggest that by identifying specific gut bacteria and metabolic pathways,
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we can guide personalized nutrition strategies to improve health outcomes.
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Doctor Jang's research opens up the possibility of using dietary fibers like inulin as a
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therapeutic approach for conditions such as fatty liver disease, diabetes, obesity, and
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even cancer.
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The implications of training our gut microbes to neutralize sugar before it harms the liver
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could be monumental in preventive health care.
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So, next time you're at the grocery store, consider adding some garlic, onions, or
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artichokes to your cart.
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Not only do they add flavor to your meals, but they might also help protect your liver and
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boost your overall metabolic health.
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Today, we're uncovering the profound impact that our daily habits and social connections
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can have on the aging process.
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Researchers at Cornell University have conducted a study that reveals how strong
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social ties can slow down cellular aging.
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This study, published in the journal Brain, Behavior and Immunity – Health, dives into how
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our social relationships can have significant long-term advantages for biological aging.
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The research team used data from over two thousand United States adults to measure what
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they called "cumulative social advantage," which encompasses family relationships,
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emotional support, religious involvement, and community engagement.
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They then compared these scores to biological markers like cellular aging, inflammation, and
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stress hormone function, with a particular focus on "epigenetic clocks." These clocks are
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used to estimate the pace at which someone is aging.
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What they found was quite remarkable.
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People with a higher cumulative social advantage had slower biological aging, lower
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inflammation, and interestingly, no effect on stress hormones.
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The study also pointed out that higher social advantage is linked to lower levels of
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interleukin-6, a molecule known for its role in heart disease, diabetes, and neurodegeneration.
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Lead study author Anthony Ong, a psychology professor at Cornell, expressed his surprise at
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the physical impact relationships have at a molecular level.
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He explained that strong social ties can reduce chronic, low-grade inflammation, which is a key
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driver of accelerated aging.
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Essentially, these social connections work quietly over the years to build a more
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resilient body.
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The study emphasized four key areas of connection: the warmth and support received
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from parents during childhood, how connected individuals feel to their community,
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involvement in religious or faith-based communities, and ongoing emotional support from
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friends and family.
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These elements collectively create a lifetime of social depth that profoundly influences
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health trajectories.
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Ong likens social connections to a retirement account, where early and consistent investment
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yields greater returns.
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The study shows that these returns are not just emotional but also biological.
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People with richer and more sustained social connections age more slowly at the cellular
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level.
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The findings suggest that investing in high-quality relationships is just as vital for
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physical well-being as diet and exercise.
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In a way, maintaining strong social connections is like reinforcing the structure of a house to
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withstand life's storms.
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Every friendship adds insulation, and every supportive family member strengthens the
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foundation.
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This research highlights that aging well is about staying healthy and staying connected;
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the two are inseparable.
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The latest findings from the Institute for Health Metrics and Evaluation at the University
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of Washington School of Medicine reveal a mixed bag of global health trends.
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On one hand, we're seeing life expectancy returning to pre-pandemic levels, with women
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living an average of 76.3 years and men 71.5 years as of 2023.
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This marks a significant recovery after the setbacks caused by the COVID-19 pandemic.
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Globally, people are living about 20 years longer than they were in 1950, with mortality
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rates declining across all 204 countries and territories studied.
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However, this positive trend is not without its challenges.
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A new "emerging crisis" has been identified, with rising death rates among adolescents and
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young adults, particularly in high-income regions like North America.
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The Global Burden of Disease study, published in The Lancet, highlights that while deaths
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from infectious diseases such as measles, diarrheal diseases, and tuberculosis have
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sharply declined, noncommunicable diseases now account for about two-thirds of global
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mortality.
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Heart disease and stroke have again become the leading causes of death, despite declines in
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their mortality rates since 1990.
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Meanwhile, conditions like diabetes, chronic kidney disease, and Alzheimer's disease are on
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the rise.
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Doctor Christopher Murray, director of the Institute for Health Metrics and Evaluation,
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warns that the rapid growth in the world's aging population and evolving risk factors are
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creating new global health challenges.
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He calls for government and health care leaders to respond swiftly and strategically to these
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disturbing trends.
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In high-income countries, the United States shows the slowest progress in reducing chronic
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disease deaths.
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The study reveals that about half of the global disease burden is preventable, linked to
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modifiable risk factors such as high blood pressure, smoking, high cholesterol, diabetes,
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and obesity.
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Environmental factors like air pollution and lead exposure, as well as issues related to
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newborn health, also play significant roles.
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Interestingly, mental health is a growing concern, with the burden from anxiety and
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depression increasing.
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Furthermore, while the global population is growing and aging, death rates among children
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and young adults have risen in some regions.
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In high-income North America, the most significant rise in deaths among those aged 20
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to 39 is due to suicide, drug overdose, and excessive alcohol consumption.
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The study also points out that in sub-Saharan Africa, deaths among adolescents and young
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adults are increasing due to infectious diseases and unintentional injuries.
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For children aged 5 to 14 globally, iron deficiency is the leading risk, followed by
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those related to unsafe water, sanitation, and malnutrition.
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As a call to action, the researchers emphasize the urgent need for policymakers to broaden
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health priorities, especially for adolescents and young adults, rather than limiting
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resources.
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Emmanuela Gakidou, a senior author of the studies, highlights the danger of recent cuts
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to international aid, which threaten to unravel decades of work aimed at closing health
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inequities in low-income regions.
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Without global health funding, the gap is certain to widen, putting essential care,
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medicine, and vaccines at risk.
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Heather Evans, a resident of Calgary, experienced the profound impact of heart
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disease firsthand.
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At the young age of thirty-nine, she survived two heart attacks in one day, a harrowing
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experience that was just the beginning of a tragic pattern in her family.
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Over the years, heart disease claimed the lives of five of her seven siblings, leaving her with
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a deep sense of loss and a resolve to fight the disease that has so heavily burdened her
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family.
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Evans's story is not unique, as a recent report published in The Lancet medical journal
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highlights a shift in the leading causes of mortality back to familiar threats like heart
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disease, displacing COVID-19 from its position as the number one global killer.
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This shift underscores the persistent threat that chronic conditions like heart disease,
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stroke, and chronic obstructive pulmonary disease pose to global health.
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Infectious diseases, including those caused by measles and tuberculosis, have seen a decline,
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while noncommunicable diseases such as diabetes, Alzheimer's disease, and drug use
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disorders are on the rise.
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Michael Brauer, a principal research scientist at the Institute for Health Metrics and
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Evaluation, emphasizes that while these conditions may not capture headlines like a
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global outbreak, their toll on human health is substantial and often underappreciated.
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The report also highlights an alarming trend of rising death rates among teenagers and young
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adults, particularly in high-income countries like Canada.
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These 'deaths of despair,' which include suicides, drug overdoses, and alcohol-related
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deaths, are increasing among young people.
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This trend calls for urgent action from policymakers to address the social determinants
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of health, such as housing, education, and social support.
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In Canada, the latest data indicates that heart disease, lung cancer, and Alzheimer's disease
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are the top three causes of death.
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However, the spike in mortality rates among young adults due to these 'deaths of despair'
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is a growing concern.
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Jen Mayor, an Ottawa mother who lost her daughter to suicide, underscores the need for
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improved mental health care and support for struggling youth, emphasizing that listening to
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and understanding the pressures they face is crucial.
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James MacKillop, a professor at McMaster University, notes the complexity of the factors
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contributing to higher mortality among younger age groups.
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He points out that while the opioid death rate in Canada has decreased, the overall numbers
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remain high, highlighting the need for youth-specific treatment programs and early
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intervention efforts.
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Despite these challenges, there is hope.
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Many risk factors for chronic health conditions are well-known and modifiable, such as smoking,
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alcohol consumption, diet, and physical activity.
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Heather Evans, reflecting on her own journey, stresses the importance of lifestyle changes
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and societal focus on healthy living to prevent heart disease and similar conditions.
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Cold-water immersion has been a topic of interest for both its potential health benefits
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and the risks it poses.
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Mark Harper, a doctor of medicine and Doctor of Philosophy, recounts his first experience with
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cold-water swimming in the south of England two decades ago.
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Despite the initial shock to his system, he felt an unexpected sense of well-being after
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emerging from the water.
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Harper, an anesthesiologist, has since researched the potential risks and rewards of
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cold-water immersion, which has been claimed to offer health benefits for centuries.
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Even Thomas Jefferson was known to have used a cold foot bath daily for many years.
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Recent evidence suggests that cold-water immersion may have positive effects on mental
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health, though scientific confirmation is still lacking.
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Harper notes that while there is a strong base of anecdotal evidence, hard evidence is yet to
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be established.
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He mentions the potential benefits for depression and general well-being, attributing
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them to a biological phenomenon known as hormesis.
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This is where a low-dose stressor can create a positive response, much like how muscles and
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bones grow stronger under stress from weight-bearing exercises.
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Harper acknowledges that the observed positive effects might partly be due to the placebo
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effect, where individuals feel better simply because they believe they are doing something
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beneficial.
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He also suggests that the benefits may stem from the social aspect of cold-water immersion,
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the physical exercise involved, or the sense of accomplishment.
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Harper believes it's a combination of these factors, with the cold adding an extra effect.
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He emphasizes that the cold has a significant impact on the body, offering a good
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physiological basis for the intervention's benefits on mental health.
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However, cold-water immersion is not without its risks.
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Mike Tipton, a physiologist at the University of Portsmouth, co-authored a paper with Harper
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that highlights both the advantages and dangers of cold-water immersion.
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The sudden drop in temperature can be beneficial, but it also poses threats, such as
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the risk of hyperventilation and drowning.
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Tipton advises that these risks can be managed with common sense and precautions.
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To reap the potential benefits of cold-water immersion, Tipton recommends not going to
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extremes.
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Entering water at a temperature of 20 to 15 degrees Celsius, approximately 68 to 59 degrees
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Fahrenheit, for just a few minutes can be sufficient.
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If the water is colder, it's important to limit exposure.
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Tipton suggests avoiding water below 12 degrees Celsius, or 54 degrees Fahrenheit, and staying
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in for no more than two minutes.
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The benefits come from the body's cold-shock response, which includes the release of stress
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hormones and endorphins, as well as an anti-inflammatory effect.
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Tipton warns against prolonged exposure to cold water, as it can damage small nerves and blood
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vessels, potentially leading to severe consequences similar to frostbite.
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Harper, who has experienced long swims in open water, advises against the belief that colder,
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longer immersions are better.
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Instead, he stresses the importance of safety and moderation.
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Given that humans are considered tropical animals, adapting to cold-water immersion can
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be stressful and risky for the cardiovascular and respiratory systems.
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Tipton suggests a cautious approach, including a medical screening before attempting
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cold-water immersion.
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He advises swimming in areas with lifeguards or with experienced outdoor swimmers, and being
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aware of the specific body of water, including its tides, temperature, depth, and potential
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pollution.
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Ultimately, while cold-water immersion can be a powerful experience with potential mental
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health benefits, it's crucial to approach it sensibly.
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Incremental exposure and safety precautions are key to maximizing benefits and minimizing
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risks.
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Today, we're delving into the world of dietary supplements, specifically creatine, which has
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been gaining attention not only for its role in muscle building but also for its potential to
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support brain and heart health.
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Traditionally associated with gym enthusiasts and athletes, creatine is now being recognized
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for a variety of other health benefits.
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Creatine is a natural compound primarily stored in our muscles, but it's also found in smaller
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amounts in the brain, liver, and kidneys.
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Our bodies require adenosine triphosphate, or ATP, for energy, particularly during
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high-intensity exercise.
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Creatine helps by donating a phosphate group to produce additional ATP, enhancing physical
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performance.
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Registered dietitian nutritionist Sam McKinney highlights creatine's broader functions beyond
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exercise.
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It may aid in cognition, memory, recovery, blood sugar control, and overall energy levels.
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There's growing evidence suggesting its benefits for heart and neurological health as
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well.
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Interestingly, women typically have lower creatine stores than men, which means
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supplementation can be particularly beneficial during hormonal changes such as menstrual
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cycles, pregnancy, and menopause.
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This offers a unique advantage for maintaining energy and potentially supporting heart health.
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Studies have explored creatine's cognitive benefits, with some showing improvements in
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memory and intelligence scores, especially among vegetarians, vegans, and the elderly who
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might have lower phosphocreatine stores.
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While results are mixed, they are encouraging, pointing to creatine as a safe, effective
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supplement for many.
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The potential heart health benefits of creatine are also noteworthy.
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Since the heart uses ATP for energy, creatine could support the heart during stress or
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increased workload.
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It may even improve outcomes from heart surgeries and aid in maintaining the balance of
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oxygen in the heart.
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As we age, muscle mass naturally decreases, but creatine can help counteract these losses,
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promoting longevity and independence.
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When combined with resistance training, creatine supports muscle strength, which is
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crucial for mobility and overall health in the elderly.
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Creatine is available in various forms, but creatine monohydrate is the most common and
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well-researched.
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A typical daily dose is about five grams, and it's considered one of the safest and most
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effective supplements for most people.
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However, individuals with preexisting kidney issues should consult a healthcare provider
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before starting supplementation.
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With its wide-ranging benefits, from enhancing physical performance to supporting cognitive
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and heart health, creatine stands out as a versatile supplement.
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Its potential to slow aging and boost overall health makes it an exciting area for further
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research.
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That's all for today's episode of Morning Medical with Doctor Chow.
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Remember, whether it's about the food you eat, the social connections you maintain, or the
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supplements you consider, every choice contributes to your overall health.
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Until next time, stay informed and stay healthy.