Health
Health Experts Warn of Winter Dehydration Risks
Health experts are cautioning that dehydration is often overlooked during winter, putting people at risk of fatigue, brain fog, and even serious kidney problems. While most associate dehydration with hot summer months, specialists say maintaining proper fluid intake is equally important when temperatures drop.
Yadira Santiago Banuelos, a clinical assistant professor and practising family nurse practitioner at Purdue University’s School of Nursing, emphasised that hydration affects a wide range of bodily functions, from skin health to immunity. “When we’re well hydrated on the inside, we’re also better hydrated on the outside, helping with dry skin,” Banuelos said. “It also helps lubricate between our joints, which we definitely want when we’re out shovelling snow.”
Hydration also plays a critical role in supporting the immune system during peak cold and flu season. Banuelos explained, “It helps provide that moist mucous membrane layer that helps prevent viruses, bacteria, things like that throughout the winter.”
Despite these benefits, winter dehydration often goes unnoticed. People tend to underestimate their risk because they are less likely to feel thirsty. Banuelos noted that the body’s thirst response decreases by about 40 per cent in colder months, meaning individuals may already be dehydrated before recognising their need for fluids.
Cold weather also contributes in subtle ways. Dry air pulls moisture from the skin, urination frequency tends to increase, and sweat continues to occur even if it evaporates quickly. “We still sweat, but oftentimes we don’t notice it as much because it tends to evaporate a lot quicker with the cold,” Banuelos said.
Dehydration can lead to a range of symptoms depending on severity. Early signs include dizziness, dry skin, chapped lips, fatigue, and a foggy feeling. If prolonged, it can result in more serious complications, including kidney problems such as kidney stones or even kidney failure.
Experts advise that the widely cited “eight cups a day” guideline may not be sufficient for everyone. Banuelos explained that men typically need about 13 cups (approximately three litres) of water daily, while women require around nine cups (two litres). Fluid needs can increase during pregnancy or breastfeeding, with women sometimes needing intake levels similar to men.
Maintaining adequate hydration in winter may require more conscious effort. Experts suggest drinking water regularly throughout the day, incorporating hydrating foods such as fruits and vegetables, and paying attention to signs of dryness or fatigue. Simple habits such as carrying a reusable water bottle, choosing warm fluids like herbal teas, and monitoring urine color can help ensure proper hydration.
With cold temperatures and dry indoor air contributing to moisture loss, health professionals emphasise that staying hydrated is vital not only for comfort but also for overall health. Winter should not be a season of neglect when it comes to water intake, and proactive hydration can help protect joints, skin, kidneys, and immunity during the colder months.
Health
Global Mental Health Cases Near 1.2 Billion as Anxiety and Depression Drive Sharp Worldwide Rise
A major global analysis has found that mental health conditions have surged to an estimated 1.2 billion people worldwide, driven largely by steep increases in anxiety and depression over the past three decades.
The findings, published in The Lancet as part of the Global Burden of Disease Study 2023, show that the number of people living with mental disorders has almost doubled since 1990, marking a 95% rise. Researchers say major depressive disorder and anxiety disorders have seen even sharper growth, increasing by 131% and 158% respectively, making them the most prevalent mental health conditions globally.
The report describes mental illnesses as widespread conditions that create long-term disability and significant human suffering. It also highlights broader consequences for economies and public services, including reduced productivity, lower workforce participation and increasing pressure on health and welfare systems.
Researchers estimate that in 2023 alone, around 620 million females and 552 million males were affected by mental health conditions. While the overall burden is rising across both sexes, the study points to notable differences in the types and prevalence of disorders.
Among women, depression and anxiety were the most commonly reported conditions, alongside higher rates of eating disorders such as anorexia nervosa and bulimia nervosa. The report links this disparity to a mix of biological, social and structural factors, including exposure to domestic violence, sexual abuse, gender inequality and reproductive health-related changes.
In contrast, neurodevelopmental and behavioural disorders, including attention deficit hyperactivity disorder (ADHD), conduct disorder and autism spectrum conditions, were more frequently diagnosed in men.
Teenagers aged 15 to 19 were identified as the group experiencing the highest mental health burden globally, raising concerns about early onset of conditions and insufficient preventive care for young people.
The study identifies several key risk factors associated with mental illness, including childhood sexual violence, bullying and intimate partner violence. These factors are strongly linked to conditions such as depression, schizophrenia, bipolar disorder and anxiety disorders. However, researchers note that such exposures have remained relatively stable over time and account for only a portion of the overall rise.
According to the authors, broader drivers are likely contributing to the increasing prevalence of mental disorders. These include genetic and biological influences, poverty, inequality, and the growing impact of global crises such as armed conflict, pandemics, natural disasters and climate-related stress.
While mental health conditions have long been a leading cause of disability worldwide, the report warns that the situation is worsening. At the same time, health systems have not expanded services at a pace matching demand.
The authors caution that the gap between rising need and limited access to care is becoming more pronounced, leaving millions without adequate treatment or support.
Health
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Health
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