Health
Aging may speed up in areas with extreme heat, research suggests
Although many retirees move to warmer climates for retirement, a new study from USC Leonard shows that extreme heat may speed up the aging process in older people, SWNS reported.
People living in areas with more days of hot weather appear to age faster at a molecular level than residents of cooler regions, according to the study, which was published in the journal Science Advances.
The effect was shown to accelerate “biological aging,” the researchers found, raising new concerns about how it could affect long-term health.
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While chronological age is based on birthdate, biological age is measured by how well the body functions at the molecular level, according to the National Institute on Aging.
Having a biological age greater than your chronological age is associated with a higher risk of disease and death.
Likewise, extreme heat (categorized as 90 degrees Fahrenheit and above) has long been associated with health issues, including increased risk of death, the SWNS report stated.
Extreme heat may accelerate “biological aging” in older adults, the research found. (iStock)
In the study, senior author Jennifer Ailshire (professor of gerontology and sociology at the USC Leonard Davis School) and co-author Eunyoung Choi (a USC Leonard Davis postdoctoral scholar) examined how biological age changed over a six-year period in thousands of U.S. participants, all aged 56 and older.
Blood samples taken at various points were analyzed for certain changes — called “epigenetic changes” — in how individual genes are turned “on or off,” the press release stated.
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The research team used mathematical tools called “epigenetic clocks” to analyze these patterns and estimate biological ages, as SWNS reported.
They then compared older participants’ changes in biological age to their locations’ heat index history and number of heat days reported by the National Weather Service from 2010 to 2016.
Participants living in areas with more than half of the year above 90 degrees Fahrenheit experienced up to 14 months of additional biological aging compared to their cool-weather counterparts. (iStock)
The analysis revealed a “significant correlation” between areas with more days of extreme heat and individuals experiencing greater increases in biological age, even after adjusting for other factors.
“Participants living in areas where heat days — defined as 90 degrees Fahrenheit or higher — occur half the year, such as Phoenix, Arizona, experienced up to 14 months of additional biological aging compared to those living in areas with fewer than 10 heat days per year,” said Choi in a press release.
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The study used heat index, rather than just air temperature, to take relative humidity into account, Ailshire noted in the release.
“Older adults don’t sweat the same way. We start to lose our ability to have the skin-cooling effect that comes from that evaporation of sweat.”
“It’s really about the combination of heat and humidity,” said Ailshire.
“Particularly for older adults, because [they] don’t sweat the same way. We start to lose our ability to have the skin-cooling effect that comes from that evaporation of sweat.”
The analysis revealed a “significant correlation” between areas with more days of extreme heat and individuals experiencing greater increases in biological age. (iStock)
Dr. Chris Scuderi, a family physician based in Jacksonville, Florida, spoke to Fox News Digital about what he has noticed regarding heat and aging in his field.
“I’ve observed a notable rise in hospitalizations and heat-related incidents among older adults, particularly during last summer’s record-breaking temperatures in Northeast [Florida],” said Scuderi, who was not involved in the study.
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Certain medications, such as antidepressants and heart medications like beta blockers, can further impair the body’s ability to regulate temperature, which increases the likelihood of heat-related illness, according to the doctor.
Some chronic health conditions can also change the body’s normal reaction to heat, the Centers for Disease Control and Prevention (CDC) website states.
A map of the United States shows the amount of “Extreme Caution” heat days in different areas. (SWNS)
Scuderi offered a few tips to help people beat the heat.
Those include scheduling outdoor activities during cooler parts of the day, maintaining proper hydration, and checking all medications with a family physician to identify any potential issues.
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Another tip from the CDC is to drink water before feeling the sensation of thirst.
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“If your doctor limits the amount of fluids you drink or has you on water pills, ask them how much you should drink during hot weather,” the website recommends.
Next steps for the research team will be to determine what other factors could make someone more vulnerable to heat-related biological aging and how it might connect to health.
In the meantime, Ailshire noted that the findings could prompt policymakers, architects and others to keep heat mitigation and age-friendly features in mind as they update urban infrastructure, such as building bus stops with shaded areas, planting more trees and increasing urban green spaces.
Health
Brain Health Challenge: Doctor Appointments for Your Mind and Body
Congratulations, you’ve reached the final day of the Brain Health Challenge! Today, we’re asking you to do a few things that might feel a bit out of left field — like getting your blood pressure checked.
No, it isn’t as fun as playing Pips, but experts say it’s one of the most important things you can do for your brain. That’s because heart health and brain health are intrinsically linked.
High blood pressure, in particular, can damage brain cells, and it’s a significant risk factor for stroke and dementia. When blood pressure is too high, it places stress on the walls of arteries in the brain. Over time, that added stress can cause the blood vessel walls to thicken, obstructing blood flow. In other cases, the increased pressure causes the artery walls to thin and leak blood into the brain.
These changes to the blood vessels can sometimes cause a large stroke to occur. More commonly, the damage leads to micro-strokes and micro-hemorrhages, which cause fewer immediate problems and often go unnoticed. But if someone has hypertension for years or decades, these injuries can build up, and the person may start to experience cognitive impairment.
High blood pressure “is known as a silent killer for lots of reasons,” said Dr. Shyam Prabhakaran, the chair of neurology at the University of Chicago. “It doesn’t cause you any symptoms until it does.”
Because the damage accumulates over many years, experts say that managing blood pressure in midlife matters most for brain health. Hypertension can be addressed with medication or lifestyle changes, as directed by your doctor. But the first thing you need to do is know your numbers. If your blood pressure comes back higher than 120/80, it’s important to take it seriously, Dr. Prabhakaran said.
While you’re at it, there are a few other aspects of your physical health that you should check on.
Your eyes and ears are two of them. Hearing and vision loss have both been shown to increase the risk of dementia. Experts think that with less sensory information coming in to stimulate the brain, the regions that process hearing and vision can start to atrophy. What’s more, people with sensory loss often withdraw or are left out of social interactions, further depriving them of cognitive stimulation.
Oral health can also affect your brain health. Research has found a connection between regular flossing and reduced odds of having a stroke. That may be because good oral health can help to reduce inflammation in the body. The bacteria that cause gum disease have also been tied to an increased risk of Alzheimer’s.
And have you gotten your shingles vaccine? There is mounting evidence that it’s a powerful weapon for protecting against dementia. One study found that it lowered people’s odds of developing the condition by as much as 20 percent.
To wrap up this challenge, we want you to schedule a few medical appointments that benefit your brain, as well as your body.
After five days of feeding, exercising and challenging your brain, you are well on your way to better cognitive health. Thanks for joining me this week, and keep up the good habits!
Health
Health experts react as Andrew Huberman backs Trump admin’s new food pyramid
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The Trump administration has taken a new approach to the food pyramid.
The Department of Health and Human Services (HHS) announced new guidelines on Wednesday with an updated, inverted pyramid. The top of the pyramid, which is now the wider part of the structure, is built on meat, fats, fruits and vegetables, while whole grains are at the narrow bottom.
This follows HHS Secretary Robert F. Kennedy Jr.’s mission to “Make America Healthy Again” (MAHA), aimed at addressing chronic disease, childhood illnesses and ultraprocessed foods.
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“The new guidelines recognize that whole, nutrient-dense food is the most effective path to better health and lower health care costs,” Kennedy said during a press briefing in Washington, D.C.
“Protein and healthy fats are essential, and were wrongly discouraged in prior dietary guidelines. We are ending the war on saturated fats.”
The Trump administration announces the 2025-2030 Dietary Guidelines for Americans, putting “real food” back at the center of health. (realfood.gov)
The HHS secretary rallied against refined carbohydrates, food additives and added sugar, highlighting the health risks associated with sugar-sweetened beverages.
Kennedy’s main message to Americans was to “eat real food.”
TRUMP ADMIN’S NEW NUTRITION GUIDELINES TARGET ULTRA-PROCESSED FOODS, EASE UP ON RED MEAT AND SATURATED FATS
The announcement triggered reactions from top health and wellness voices, including Stanford neuroscientist Dr. Andrew Huberman, host of the “Huberman Lab” podcast.
In a post on X, Huberman shared the White House’s graphic of the new pyramid, praising the decisions that were made.
“Oatmeal (and I think that’s rice and sourdough) made the cut!” he commented. “In all seriousness, assuming overall calories are kept in check and people exercise & get sun(day)light, this looks spot on.”
He added, “Maybe up the veggies a bit, add low-sugar fermented foods like sauerkraut & this is great.”
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Huberman said in a thread on the same post that Americans “don’t have to eat all the foods” shown in the diagram.
“You won’t see me drinking milk or eating shrimp,” he said. “Nothing against shrimp, I just don’t like the taste. Aversion to crustaceans.”
“Maybe up the veggies a bit, add low-sugar fermented foods like sauerkraut & this is great,” Huberman commented on X. (Chance Yeh/Getty Images for HubSpot; iStock)
The new guidelines received praise from other major health figures, including former FDA commissioner Dr. David Kessler.
“There should be broad agreement that eating more whole foods and reducing highly processed carbohydrates is a major advance in how we approach diet and health,” Kessler told The Associated Press.
“Protein and healthy fats are essential, and were wrongly discouraged in prior dietary guidelines.”
Dr. Bobby Mukkamala, president of the American Medical Association, shared in a statement that these guidelines “affirm that food is medicine and offer clear direction patients and physicians can use to improve health.”
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“The American Medical Association applauds the Administration’s new Dietary Guidelines for spotlighting the highly processed foods, sugar-sweetened beverages and excess sodium that fuel heart disease, diabetes, obesity and other chronic illnesses,” Mukkamala wrote.
The American Medical Association applauded the HHS for its updated nutrition guidelines. (iStock)
But not all feedback was positive.
Some people expressed concern about prioritizing red meat and dairy, while calling for the limitation of saturated fat.
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Neal Barnard, president of the Physicians Committee for Responsible Medicine, shared in a reaction to STAT that while the guidelines “do have one or two good points, emphasizing fruits and vegetables and limiting alcohol,” the guidelines are “for the most part a strong reflection of industry influence.”
Christopher Gardner, a nutrition expert at Stanford University, also spoke out against the new guidelines, as reported by NPR.
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“I’m very disappointed in the new pyramid that features red meat and saturated fat sources at the very top, as if that’s something to prioritize. It does go against decades and decades of evidence and research,” said Gardner, who was a member of the Dietary Guidelines Advisory Committee.
Fox News Digital’s Rachel Wolf, as well as Alexandria Hoff of Fox News, contributed reporting.
Health
Matt Damon’s Gluten-Free Diet Helped Him Lose 18 Pounds
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