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Aging may speed up in areas with extreme heat, research suggests

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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.

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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.

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“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. 

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“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. 

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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.

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The Best Time To Take Turmeric for Weight Loss and How To Maximize Results

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Doctor reveals what 30 days without alcohol does to the brain and body amid Dry January

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Doctor reveals what 30 days without alcohol does to the brain and body amid Dry January

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After a season of bingeing and drinking, your body may feel like it needs a break from the party.

Dry January — a modern trend that challenges people to abstain from drinking for the first month of the year — has become a popular way to “detox” from the holidays and start the new year on a healthy note.

Research has linked alcohol to a variety of health conditions, ranging from hangovers to higher cancer risk.

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In a recent podcast episode of “The Dr. Mark Hyman Show,” Dr. Mark Hyman, chief medical officer of Function Health, shared how 30 days of not drinking alcohol can transform health.

Hyman, who is based in Massachusetts, called Dry January a “powerful way to see in real time how alcohol affects nearly every system of your body and how quickly those systems can recover.”

Dry January has become a popular way to “detox” from the holidays and start the new year on a healthy note. (iStock)

Alcohol’s toll on the brain and body

Hyman acknowledged that most people drink to feel happier and more comfortable in social situations. This effect is caused by the main ingredient in alcohol, called ethanol, which can also have toxic effects.

Instead of stimulating the brain, alcohol slows it down and loosens inhibitions. “You feel more relaxed, more social, more confident, maybe you feel a little euphoric,” Hyman said.

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Alcohol’s effect on the brain can also lead to poorer decisions and slower reflexes, the doctor cautioned.

Drinking alcohol can cause cognitive decline and brain fog, experts warn. (iStock)

Drinking also impacts the prefrontal cortex of the brain, which Hyman described as “the adult in the room,” responsible for judgment, planning and restraint. “It goes offline early in drinking, which explains why people feel freer or act impulsively when they drink,” he said.

Even moderate drinking can cause metabolic stress, inflammation, impaired detoxification and hormonal shifts, Hyman said, which can impact nearly every organ system in the body.

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Alcohol consumption has also been linked to an increased risk of cancer, metabolic dysfunction, gut microbiome disturbances and mitochondrial toxins.

It can also prevent the body from falling into REM sleep, which is the deep rest recovery period when the immune system cleans out the day’s toxins, according to Hyman.

Alcohol can impact deep rest and mental health, according to experts. (iStock)

Memory loss, cognitive decline, anxiety, sleep disruption, dementia and cardiovascular disease are all known risks of long-term alcohol use, as well as liver complications like fatty liver disease.

“Bottom line, alcohol taxes every major system in your body, especially your liver, your brain, your gut, your hormones,” Hyman said.

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The effects of 30 days with no alcohol

The first week after your last drink, the body begins to detoxify and reset, according to Hyman. Blood sugar and cortisol stress hormones level out, and the liver begins to process a “backlog of toxins.” The body also re-hydrates and re-energizes.

The first 30 days with no alcohol allows the body to balance itself out. (iStock)

The second week, the gut and brain will begin to re-balance, as hormones like serotonin and dopamine stabilize, gut inflammation drops and the microbiome begins to heal. Cravings for sugar and alcohol will wane and mental clarity returns, the doctor said.

Week three is marked by further decreases in inflammation, fatty liver and blood pressure. This can be noticeable in the skin, as puffiness and redness are reduced. Mood also begins to stabilize, with lower anxiety levels.

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In week four, the body experiences additional metabolic and immune benefits, Hyman shared, including more insulin sensitivity, which makes it easier to lose weight.

“You have a stronger immune response. You’re not getting sick as much. You have better deep sleep, balanced hormones, especially cortisol and testosterone,” he said. “And you see a big change in energy, confidence and focus.”

Abstaining from alcohol can help restore energy, according to experts. (iStock)

Dr. Pinchieh Chiang, a clinician at Circle Medical in San Francisco, said that Dry January isn’t a “detox,” but rather provides “feedback” from the body.

“It gives the body time to show people how it feels without alcohol. For many, that insight alone changes their relationship with drinking,” she said. “The biggest surprise isn’t what people give up, it’s how much better they feel.”

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The doctor confirmed that the first few days of not drinking may feel harder than expected, sometimes causing restlessness, cravings or disrupted sleep, but Dry January can ultimately change drinking habits for the remainder of the year.

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After a full year without alcohol, Chiang noted that health improvements are more profound. “We see sustained improvements in blood pressure, liver function and inflammation,” she said. “Those changes directly affect long-term heart disease and stroke risk.”

The risks of ‘all or nothing’

Some experts warn that adopting the Dry January trend could strengthen the urge to drink more in the other months, noting that some drinkers may find more success by slowly consuming fewer drinks per week.

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Thomas Stopka, Ph.D., an epidemiologist and professor in the public health and community medicine department at Tufts University School of Medicine in Massachusetts, shared in a Futurity report that for some people, “damp January” may be more suitable.

One expert warned that not all drinkers should quit “cold turkey,” as it could lead to severe withdrawals. (iStock)

“Dry January is well-intentioned, and it may work really well for the people who can stick to it, maybe even beyond January,” he said. “Other people may be more inclined to cut down on alcohol consumption rather than quit drinking completely for the month.”

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Stopka noted that successful harm-reduction approaches “aim to be judgment free.”

“Substance use disorder is a disease,” he said. “It takes time to treat the disease and to stay connected to the continuum of care — from prevention to treatment initiation to sustained therapy, whether through medication, self-help, or individual therapy or group support.”

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Those struggling with signs of alcohol use disorder should consult a medical professional for personalized guidance.

Fox News Digital reached out to several alcohol industry associations requesting comment.

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The Best Weight Loss Medications and Supplements in 2026

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The Best Weight Loss Medications and Supplements in 2026


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