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Yahoo
3 days ago
- Business
- Yahoo
Heat waves may accelerate the aging process
When you buy through links on our articles, Future and its syndication partners may earn a commission. Every day, Kalpana Suryawanshi, 48, looks into the mirror and whispers, "I look older than my age." Eight years ago, she was diagnosed with Type 2 diabetes. Since then, her health has deteriorated, which she attributes to increased exposure to heat while working in the fields, planting crops, harvesting produce, and carrying heavy loads of cattle fodder. During this time, she frequently experienced dizziness and weakness as temperatures exceeded 40 degrees Celsius (104 F) in her village of Nandani in Maharashtra state, India. Heat is known to affect cognitive function, cardiovascular health, and kidney function, and a growing body of research suggests that exposure to rising temperatures also accelerates the body's aging process. A 2023 German study published in Environment International was the first to find that higher air temperatures are associated with faster aging at the cellular level. It found that prolonged exposure to elevated temperatures can make the body age faster than its chronological age, a phenomenon known as epigenetic age acceleration. Scientists measure this process using epigenetic clocks, which analyze chemical markers called DNA methylation that turn genes on and off. The study found that in areas where the average annual temperature is 1°C higher, people tend to show signs of accelerated aging at the cellular level. When scientists talk about epigenetic age, they measure how old a body is at the cellular level, which can differ from the actual age in years. This is based on changes to DNA called epigenetic markers, the chemical tags that turn genes on or off. Environment, lifestyle, and stress influence these markers. As one ages, the pattern of these chemical tags changes, and scientists use this information to create an epigenetic clock, a tool that estimates biological age. The genes affected by these changes control many vital functions, like repairing cells and tissues and protecting against toxins. When the wrong genes are switched on or off, it can make it harder for the body to repair itself, fight disease, or recover from stress. Over time, these hidden changes can lead to outward signs of aging, such as weaker bones or slower healing. Epigenetic age gives a glimpse into how well the body is holding up on the inside. 2024 was the hottest year on record, with 6.8 billion people worldwide experiencing extreme heat for at least 31 days. One unusual effect of this rising heat is observed firsthand by India's community health care workers, who report that more people appear older than their actual age. Scientists are now also finding the biological mechanisms that contribute to premature aging. Wenli Ni, a postdoctoral research fellow at Harvard T.H. Chan School of Public Health and the lead author of the German study, said heat exposure can induce alterations in DNA methylation, which is a biological process that can influence gene expression and cellular function. She explained that this mechanism can trigger harmful biological processes and accelerate aging. "Heat exposure may also lead to oxidative stress, resulting in DNA damage that could alter DNA methylation patterns and impact aging," she added. Oxidative damage occurs when unstable molecules called free radicals attack cells. They can harm DNA, cell membranes, and proteins, contributing to aging, cancer, and cardiovascular health issues. These results were repeated in Taiwan, where scientists examined over 2,000 people and found high ambient temperature and heat index exposure were linked to increased aging, with stronger associations in prolonged exposure. The study revealed that a 1°C increase in the 180-day average temperature was linked to a rise of 0.04 to 0.08 years in biological age acceleration, as measured by three different epigenetic aging clocks that estimate biological age. Related: Human aging accelerates dramatically at age 44 and 60 While this increase in age acceleration might seem small at first, it's important to consider how these effects can build up over time. Even slight increases in biological aging, when sustained year after year, can add up to several years of accelerated aging. This can mean an earlier occurrence of age-related illnesses. Moreover, when these small shifts affect large populations, they can contribute to a tremendous rise in disease burden and health care costs. A recent study published in Science Advances examined the relationship between heat and aging in more than 3,500 adults aged 56 and above in the U.S. The study found that long-term heat exposure, lasting from one to six years, was associated with epigenetic aging. Persistent exposure to high temperatures can result in frequent sleep disturbances, raising stress and anxiety levels. Over time, this physiological degradation accumulates and may accelerate health decline with age. The German study found that women and individuals with obesity or Type 2 diabetes exhibited stronger associations between air temperature and aging. Women generally sweat less and have different body responses to heat, which can make it harder for them to cool down and sometimes cause their body temperature to rise faster, Ni explained. She also said that studies suggest women have a higher threshold for activating the sweating mechanism at high temperatures, indicating their bodies take longer to start sweating. Diabetes also makes people more susceptible to high temperatures. People with diabetes often have reduced blood flow to their skin, which can interfere with the body's ability to release heat and stay cool in hot weather. Additionally, body fat can act as insulation, making it harder for heat to move from the body's core to the skin, reducing its ability to release heat and stay cool. Epigenetic age acceleration can contribute to cardiovascular diseases, cancer, diabetes, and mortality, putting more pressure on public health care systems. In 2016, Rajma Jamadar, now 47 years old, from Maharashtra's Haroli village, woke up in the middle of the night with irregular heartbeats. The next day, the doctor said that her blood pressure spiked and prescribed lifelong medication. Within months, her symptoms worsened as her cardiovascular health declined. "Upon further diagnosis, the doctor then told me my heart isn't pumping blood efficiently," she said. She prepares meals for 175 children at a public school in her village, but rising temperatures make her job increasingly difficult as the heat from cooking takes a toll on her. "Every day, I feel sick," she said. Remarkably, climate change may sometimes accelerate epigenetic aging in children even before birth. A study published last year in Nature examined 104 drought-exposed children and 109 same-sex sibling controls in northern Kenya. It found a positive association between in-utero drought exposure and aging, emphasizing that the stressors from drought may decrease overall life expectancy. According to study author Bilinda Straight, changes can happen through three key pathways in the body. The first is the immune system, the body's first line of defense that protects one from infections and diseases. The second involves metabolic processes that provide the body with energy. The third is responsible for maintaining and repairing cells in response to stress. "Whether the threat we face is physical or emotional, we still perceive it as a danger to our homeostasis, a health-preserving balance between all our physiological systems," she explained. This suggests that the emotional stress experienced by the women in the study, along with caloric restriction and dehydration, activated systems that help the body manage stress but can harm health if overactivated for extended periods. Women in the study were seen to be engaged in outdoor labor while they were also experiencing hunger and dehydration. "Those physiological stressors were accompanied by worry about the next meal, for themselves, their children, and loved ones," she added. Moreover, social factors like gender inequality exposed women to coercion, overwork, and violence. While farmers risk loss from drought, those in livestock agriculture suffer the emotional and financial toll of watching their animals die. Combined with heat stress, dehydration, and hunger, this creates immense hardship. Eventually, this maternal stress during pregnancy contributes to changes in DNA methylation in their children, Straight said. RELATED STORIES —Biological aging may not be driven by what we thought —Climate change is spoiling food faster, making hundreds of millions of people sick around the world —Climate wars are approaching — and they will redefine global conflict She suggests adequate nutrition and close monitoring of children's cardiovascular and metabolic health. Researchers advocate for long-term studies to better understand the impacts of the environment on epigenetic age acceleration. "Slowing down epigenetic age acceleration is going to be tied to increasing food security and identifying alternatives to women engaging in high-risk occupational labor," she added. Effective policies are needed to achieve food and livelihood security while reducing social and economic inequalities. However, for many women, economic insecurity and the lack of social safety nets make it nearly impossible to prioritize health. Suryawanshi's struggle highlights this problem. So far, she has spent over 600,000 Indian rupees ($7,046) on medical treatment. "I can't afford any more expenses, so I've stopped taking some medicines," she said. She visited eight hospitals in two years to search for an effective treatment. "It's a miracle that I survived. Despite being only 48, I have no strength left, but I still have to work." This article was originally published by Yale Climate Connections.
Kuwait Times
15-05-2025
- Health
- Kuwait Times
Women in Kuwait break the silence on menstrual health
From filling education gaps to seeking safer products, women are pushing for change By Dena Al-Fadhli KUWAIT: For years, women in Kuwait have reported adverse reactions from widely available menstrual products, ranging from mild irritation to serious infections. Despite visits to clinics and seeking advice from friends, the link between these symptoms and menstrual care remained unclear for many. As more research and advocacy work is being done about this topic worldwide, some women across the country have decided to take matters into their own hands — educating themselves about menstrual products and seeking safer alternatives. Hind Al-Khatresh, a Kuwaiti entrepreneur and founder of a clean, toxin-free menstrual care line, saw the growing need firsthand. 'I started to realize the period care market in Kuwait was very underserved. There was so much untapped potential and people who were hungry for something different than what they had been given.' A lack of education A 24-year-old Egyptian woman living in Kuwait, who chose to remain anonymous, is one of these women. 'I tried so many brands and none of them worked for me,' she said. 'Once I found out how many chemicals are in them, I started feeling super uneasy every time I had to wear one. Sometimes I even wish I could stop my period completely just to avoid them.' Her statement about the chemicals in menstrual products is supported by recent studies. Environment International analyzed 77 menstrual products - including pads, panty liners, and tampons - and found that all contained measurable levels of endocrine-disrupting chemicals (EDCs) such as phthalates, parabens, bisphenols and triclocarban. These chemicals can interfere with hormonal systems, potentially contributing to reproductive issues, thyroid disorders and even certain cancers with long-term exposure. The findings are especially concerning given the research published in the British Journal of Dermatology, which shows that the skin around the vaginal and vulvar areas is more permeable than other parts of the body - making it more susceptible to absorbing harmful substances. For many young women, the idea of choosing 'the right' menstrual products isn't something they're ever taught to consider. Before launching her own brand, Al-Khatresh recalls how most women would simply use whatever products were available without knowing there were alternatives: 'Everyone is on autopilot when it comes to going to the grocery store and buying pads. 'That's what my mom uses or my older sister, so I'll just use it too.'' Howra Al-Yakoub, a woman in her 30s, echoes this, recalling that when she was younger, her understanding of feminine hygiene products was very narrow: 'My knowledge at that age was limited to knowing you get your period once a month and have to wear a pad, without any real insight into why my body was reacting negatively.' 'Change it every hour' According to Dr Dalia Ismail, a gynecologist in Kuwait, adverse reactions from the use of pads are not uncommon, especially among younger women. She notes that she gets many patients who come to her with symptoms of a urinary tract infection, but when she asks about their menstrual hygiene routine, they are often surprised there is even a connection. She explains, 'most conventional pads are not breathable and made with plastic or scents that are not supposed to be used for an area that is highly sensitive. Sadly, they are not made to be worn for probably more than an hour, but most women don't know that because that's not what is advertised on the packaging. Also, it's not always possible to change it every hour.' A lack of proper menstrual hygiene education is a global concern. A UK-based survey of 1,000 menstruating adults found that 23 percent of individuals aged 25 and under were not shown how to use menstrual products before their first period. This lack of preparation led to 25 percent experiencing public leaks and 16 percent suffering pain due to improper use of sanitary products. These statistics reflect a reality that resonates with many young women in Kuwait. One young Kuwaiti student, who chose to remain anonymous, detailed that she would continuously get painful rashes after using menstrual products: 'I kept ignoring it because I thought it was normal and that was just part of the female experience, until I actually ended up going to the hospital multiple times because of bacteria overgrowth.' The lack of education is compounded by cultural stigma surrounding gynecological care. Al-Yakoub notes that in Kuwait, it's still uncommon for unmarried women to visit a gynecologist, which prevents many from accessing the medical support and information they need. Left without guidance, these two women turned to the Internet to understand what exactly was going on. They were not alone. The 24-year-old Egyptian woman recalls discovering the likely cause of her symptoms after reading a viral thread about a popular menstrual hygiene brand. 'It was a brand almost every woman in my family used. After reading more, I realized I should stay away,' she reasoned. Bridging the gap While this awareness has put some pressure on companies to respond to the growing health concerns, many still fall short of addressing the diverse and holistic needs of women. Al-Khatresh attributes this disconnect to the fact that many mainstream menstrual products aren't created by women themselves. 'It's really hard to rely on mainstream companies to make a change if they are continually led by men who can't relate to the audience at all. All they see are numbers on a spreadsheet.' Al-Khatresh designed her brand, Tsuno, with women's health concerns in mind. But it's not just about the product. For Al-Khatresh, meaningful change begins with awareness. She's working to dismantle the silence and stigma that prevent many women in Kuwait from learning how to care for their bodies safely and confidently. Alongside a team of educators and designers, she develops illustrated booklets for students that teach the basics of menstrual hygiene in a clear, age-appropriate, and culturally sensitive way - laying the groundwork for a more informed and empowered generation.
Yahoo
25-03-2025
- Health
- Yahoo
New research highlights major health hazard faced by employees in growing industry — and the general public could also be at risk
In order to manage our growing dependence on electronics, it is imperative to adopt recycling strategies to benefit the environment and the workers who deal with this material. Research has highlighted the continuing risks that will affect the health of those who are employed in e-waste facilities. A study, published in Environment International, revealed that employees working in e-waste processing plants have shown significant health changes linked to toxic chemical exposure. This discovery suggests that workers who are exposed to hazardous substances in e-waste facilities for prolonged periods may experience serious long-term health consequences. Of the European workers examined for the study, exposure to dangerous metals such as lead, cadmium, and mercury was recorded, alongside other interactions with dangerous chemicals within the plants. Exposure to these substances was through inhalation, ingestion, or skin contact — all of which are common actions associated with these plants. When urine samples from the workers were examined, the side effects were evident: There were disruptions in the workers' steroid hormones, metabolisms, and pathways for inflammation, all of which can lead to increased risk for chronic diseases such as Parkinson's and disorders within the nervous system. For the workers in these facilities, the health implications are serious. One of the biggest challenges lies in the fact that many workers face exposure to these dangerous conditions without proper safety measures. E-waste pollution adds to already present environmental stresses. Toxic byproducts from e-waste have the potential to leach into groundwater and soil, harming the ecosystem. When materials are thrown out instead of being reused, dirty energy may be used to mine new raw materials, adding more stress to an already sensitive situation. Efforts to regulate these risks are beginning to gain traction but have not expanded enough for any real change. Of the 4.7 million tons of e-waste discarded in 2020, only 40% was recycled. Which of these factors would most effectively motivate you to recycle old clothes and electronics? Giving me money back Letting me trade for new stuff Making it as easy as possible Keeping my stuff out of landfills Click your choice to see results and speak your mind. If that figure is not improved upon, it will not only be the workers who are exposed to the dangers of e-waste — the general public will be at risk as well. Already, initiatives to recycle e-waste have been successful. One method, developed by researchers at Rice University, consists of recovering the valuable metals discarded in e-waste, which, in turn, leads to a decrease in the hazardous chemicals connected to the raw material. Ultimately, being able to address this issue fully will require real, systemic change within the e-waste industry. Without immediate action, health conditions will worsen, and countless workers will deal with life-altering consequences. Join our free newsletter for weekly updates on the latest innovations improving our lives and shaping our future, and don't miss this cool list of easy ways to help yourself while helping the planet.
Yahoo
04-03-2025
- Health
- Yahoo
Scientists make concerning discovery while analyzing samples taken at remote Antarctic stations: 'We need to do more research'
Scientists have discovered microplastics are showing up in Antarctic snow and at some of the most remote research stations. If microplastics are evident in one of the most isolated places on Earth, surely they're already making their way into the water we drink, the air we breathe, and the food we eat. A study published in the journal Science of the Total Environment revealed that researchers have detected microplastics as small as 11 micrometers — or about the size of a red blood cell — at Union Glacier, Schanz Glacier, and the South Pole. With a new detection method, scientists found anywhere from 73 to 3,099 plastic particles in just one liter of snow, according to a summary from the British Antarctic Survey on That's up to 100 times more than past studies reported. The most common plastic found was polyamide, which is used in textiles, ropes, and outdoor gear. Some particles may have traveled long distances, but researchers think much of it comes from nearby sources, like equipment and protective clothing. In the summary, ocean ecologist Dr. Clara Manno said, "We need to do more research to fully understand the sources of microplastic pollution in Antarctica — how much of it is local, and how much is transported over long distances so we can explore how best to reduce this plastic pollution in one of the most pristine places on Earth." Scientists also don't yet know the long-term effects of microplastics in Antarctic snow. But they warn these tiny particles could speed up ice melt by changing how snow reflects sunlight. Microplastics are ending up in the food chain, which means fish, seals, and penguins are likely swallowing them. This could impact the health and survival of these animals, but scientists are still figuring out just how much harm it's causing. A study from the British Antarctic Survey found that krill, a key part of the ocean's food web, might be carrying microplastics to the seafloor. This could interfere with carbon storage, the process by which the ocean traps and holds carbon instead of letting it build up in the air. If that balance gets thrown off, ocean health could decline and contribute to climate problems. Microplastics aren't just in the environment: They're in our bodies too. Scientists have even found them in human placentas and linked them to inflammation, hormone imbalances, and breathing problems. Do you worry about air pollution in and around your home? Yes — always Yes — often Yes — sometimes No — never Click your choice to see results and speak your mind. A study from Environment International found microplastics in 80% of human blood samples, meaning they are circulating through our bodies in ways scientists are still working to understand. The United Nations is working on a Global Plastics Treaty to push countries toward stricter plastic pollution policies. Scientists are also developing filtration systems to catch microplastics before they reach rivers and oceans. Some of these filters can capture even the tiniest plastic particles, stopping pollution at the source. Individuals can also help by choosing natural fabrics over synthetics, using reusable containers instead of plastic, and supporting policies that limit single-use plastics. Small changes — like adding a filter to your washing machine or checking clothing labels for plastic fibers — can also cut down pollution. Join our free newsletter for good news and useful tips, and don't miss this cool list of easy ways to help yourself while helping the planet.
Yahoo
09-02-2025
- Health
- Yahoo
New study sheds light on huge potential benefits of trending policy initiative: 'Large scale of change that is needed'
New research findings underscore the co-benefits of "net zero" climate policy on a variety of factors, one of them being the reduction of air pollution. A study conducted in the United Kingdom estimated the mutual gains of what they nicknamed "NZ" climate policy on "the health benefits of air pollution reduction, increased active travel, outdoor exposure inequalities and indoor air pollution changes." Published in the journal Environment International, the study examined two of the largest UK sources of air pollution: road transport and building heating. The researchers then compared the UK's existing policy to NZ policy to identify the benefits of climate-driven initiatives. Do you worry about air pollution in your town? All the time Often Only sometimes Never Click your choice to see results and speak your mind. According to the study, NZ policy "leads to more electric vehicles, reduced vehicle [mileage], more low carbon building heating, and reduced emissions of NO2 and PM2.5." As a result, the study ultimately identifies NZ policy as an effective solution for combatting the climate crisis and improving public health. The study also revealed the economic benefits of NZ policy, estimating that core air quality health benefits for the NZ building sector were £21.3 billion (about $26.4 billion USD) by 2050 and £9.1 billion (about $11.2 billion USD) for the transport sector. According to the researchers, the study shows a conservative projection of the air pollution benefits, and thus, they believe these numbers "would have doubled" had they focused on NO2 rather than PM2.5. While the study emphasizes NZ policy as the solution, it also acknowledges the need for its widespread adoption, noting "the large scale of change that is needed." In the coming decades, the study states that millions of homes will require new insulation and heat pumps to achieve NZ. To reach these goals, the researchers highlight climate awareness as a key factor in driving the necessary changes throughout the UK. "Net Zero health and economic co-benefits are large, as are the changes needed, requiring political leadership and public engagement," concluded the study. Join our free newsletter for good news and useful tips, and don't miss this cool list of easy ways to help yourself while helping the planet.
