Health
Could your car make you sick? Study highlights potentially cancerous toxins in vehicles
Americans may be breathing in cancer-causing chemicals while driving, recent research suggests.
A study published in the journal Environmental Science & Technology has sparked discussions about the potentially harmful toxins that could be lurking in the cabins of vehicles.
“Certainly the indoor air quality can cause health symptoms,” Dr. Ken Speath, M.D., the division chief and medical director for occupational and environmental medicine at Northwell Health on Long Island, New York, told Fox News Digital.
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It is important to be mindful of what you’re breathing in at home, at the office, at school and even in cars, according to Speath, who was not involved in the study.
“There can be situations where levels of harmful chemicals get high enough to potentially cause health harms,” he said.
Americans may be breathing in cancer-causing chemicals while they are driving, recent research suggests. A study published in the journal Environmental Science & Technology has sparked many discussions. (iStock)
“A car is a closed small space — so whatever is in the air is certainly going to be breathed in.”
Research reveals ‘harmful chemicals’
The peer-reviewed study looked at 101 owned vehicles in the U.S., model year 2015 or newer.
The researchers concluded that harmful flame-retardant chemicals — including those suspected of potentially causing cancer and some neurological issues — may be polluting the air inside vehicles.
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“Flame retardant chemicals, which are intentionally added to vehicle interiors to meet flammability standards, are released into the cabin air from the materials to which they were applied,” lead author Rebecca Hoehn, a scientist at Duke University, told Fox News Digital.
“People in these vehicles may be exposed to these chemicals.”
Seat foam was the only material the researchers measured, Hoehn said, but other interior materials could also contain the chemicals.
The researchers concluded that harmful flame-retardant chemicals — including those suspected of potentially causing cancer and some neurological issues — may be polluting the air inside vehicles. (iStock)
“Considering the average driver spends about an hour in the car every day, this is a significant public health issue,” Hoehn warned.
“It’s particularly concerning for drivers with longer commutes, as well as child passengers, who breathe more air pound for pound than adults.”
The chemicals detected in the car cabins included a flame retardant called tris (1-chloro-isopropyl) phosphate (TCIPP), which is currently being investigated as a potential carcinogen by the U.S. National Toxicology Program.
“Considering the average driver spends about an hour in the car every day, this is a significant public health issue.”
Other flame retardants — tris (1, 3-dichloro-2-propyl) phosphate (TDCIPP) and tris (2-chloroethyl) phosphate (TCEP) — were also detected.
These are “two Californian Proposition 65 carcinogens linked to neurological and reproductive harms,” according to a press release.
Higher concentrations of the flame retardants were found during warmer weather.
“We found that the same cars, sampled in both winter and summer, had higher concentrations of flame retardants in the cabin air during the warm summer months,” Hoehn told Fox News Digital.
Flame retardants are added to vehicles to meet the National Highway Traffic Safety Administration Federal Motor Vehicle Safety Standard, which mandated their use in the 1970s. (iStock)
Flame retardants are added to vehicles to meet the National Highway Traffic Safety Administration Federal Motor Vehicle Safety Standard (FMVSS 302), which mandated their use in the 1970s, the release stated.
Flame retardants have been the “focus of concern for some time,” Speath told Fox News Digital.
More information is needed to determine the health risks these chemicals pose in humans, he said.
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“A number of these have been demonstrated in studies to have health harms in animals,” he said.
“That doesn’t necessarily mean that would be true for humans, but it raises that possibility, so we need to study these chemicals more in relation to their effects on humans.”
Higher concentrations of the flame retardants were found during warmer weather, the researchers said. (iStock)
Emanuela Taioli, M.D., PhD, the director of the Institute for Translational Epidemiology at Icahn School of Medicine at Mount Sinai in New York City, was also not part of the study, but shared her reactions.
“This is a very relevant finding, since it may prompt changes in cars’ upholstery, as well as in other parts of the car where there is foam,” she told Fox News Digital via email.
“We also want to know more about this finding and monitor whether it is replicated by other investigators.”
Other sources of toxins
Stephen Showalter, a home inspector and indoor environmental air consultant with Showalter Property Consultants in Maryland, said he typically interviews clients about their history of illness, then tests for potential sources of sickness in buildings, cars, RVs and boats.
Mold is a common culprit when it comes to health issues triggered by one’s environment, he said in an interview with Fox News Digital.
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Dr. Daniel Johns, a member of the International Society of Environmentally Acquired Illnesses and a chiropractor who practices in Annapolis, Maryland, echoed Showalter’s concerns about mold-related health issues.
Johns also cautioned that cars can be a daily source of mold exposure.
“Any water that leaks from a window, sunroof or convertible can get into the carpet and cause mold growth,” he said during an interview with Fox News Digital.
Mold is a common culprit when it comes to health issues triggered by one’s environment, according to an environmental expert. (iStock)
“Mold can start growing on a wet surface within 24 to 48 hours.”
For families with small children, spilled sippy cups could play a role when it comes to mold in cars, Johns warned.
“The water seeps into the upholstery and doesn’t get noticed or properly dried out, and the whole seat can become moldy,” he said.
“Mold can start growing on a wet surface within 24 to 48 hours.”
“Every time you sit on the seat, it releases a mold spore cloud into the car. Once that happens, you can’t clean it away. The upholstery must be removed and replaced.”
The impact of these potentially harmful pollutants can vary from one person to the next, experts told Fox News Digital.
For families with small children, spilled sippy cups could play a role when it comes to mold in cars, an expert warned. (Kids and Car Safety)
People metabolize chemicals and toxins in different ways, according to Taioli.
“Metabolism happens through enzymes that the body produces,” he said.
“Each of us has a different genetic profile that defines our metabolic capacity. As a consequence, the same amount of toxin may be metabolized better/faster by some, and worse/slower by others.”
Tips for ensuring safe interiors
While further research on car-borne chemicals is needed, experts say people can take measures to limit exposure.
“People may be able to reduce their exposure by ventilating their cars,” Hoehn advised.
“For example, rolling down the windows to let out contaminated air, or pulling in fresh air with climate control systems, should reduce concentrations.
“Ultimately, reducing the amount of flame retardants added to vehicles in the first place would provide the greatest reduction in exposure risk.”
Controlling your vehicle’s cabin temperature may also reduce exposure, she added.
“Parking in a garage or shade instead of full sun may reduce the cabin temperature and limit the extent of flame retardant release,” Hoehn said.
The researchers also called for action from regulatory agencies and vehicle manufacturers.
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“Ultimately, reducing the amount of flame retardants added to vehicles in the first place would provide the greatest reduction in exposure risk,” Hoehn noted.
“If flammability standards for vehicles could be revised to meet fire safety guidelines without the use of added flame retardants, risk of flame retardant exposure from personal vehicles could be greatly reduced.”
To prevent mold in a vehicle, experts recommend keeping your windows up when it rains or snows to prevent water from permeating the carpet or fabric. (iStock)
Having your car’s air quality and surfaces tested is one way to reduce the risk of exposure to allergens, toxins and chemicals, experts told Fox News Digital.
To prevent mold in a vehicle, Showalter recommends keeping your windows up when it rains or snows to prevent water from permeating the carpet or fabric.
He also cautioned about leaky air conditioners, which can foster mold growth in vehicles, and about leaving wet items in the car.
Lastly, before buying a used car, he said it is important to check the vehicle’s history to make sure it doesn’t have flood damage, which can lead to mold and other issues.
If you think you are experiencing illness due to chemical exposure in your car, home or office, it’s best to see a health care professional to discuss your symptoms.
Fox News Digital reached out to several major car companies for comment.
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Collagen supplements have exploded in popularity, touted as everything from an anti-aging miracle to a muscle recovery booster.
But a sweeping new review conducted by U.K. researchers suggests that while collagen may help improve skin elasticity and ease arthritis pain, it does little for athletic performance or wrinkle reduction.
Researchers from Anglia Ruskin University analyzed 16 systematic reviews and 113 randomized controlled trials involving nearly 8,000 participants worldwide, which they say is the most extensive evaluation of collagen’s health effects to date.
The review found consistent evidence that collagen supplementation improves skin elasticity and hydration over time and provides significant relief from osteoarthritis-related joint pain and stiffness, according to findings published in Aesthetic Surgery Journal Open Forum.
A large U.K. review found that collagen supplements may improve skin elasticity and hydration over time. (iStock)
The researchers, however, did not find meaningful improvements in post-exercise muscle recovery, soreness or tendon mechanical properties (strength, springiness and stretch resistance).
“Collagen is not a cure-all, but it does have credible benefits when used consistently over time, particularly for skin and osteoarthritis,” co-author Lee Smith, professor of public health at Anglia Ruskin University, said in a statement.
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“Our findings show clear benefits in key areas of healthy aging, while also dispelling some of the myths surrounding its use,” Smith added.
Collagen, the most abundant protein in the body, supports skin, bones, tendons, cartilage and connective tissue, according to experts. Natural collagen production begins to drop in early adulthood and declines more sharply with age.
The study found that collagen supplements may help reduce joint pain and stiffness in people with osteoarthritis. (iStock)
The review found that long-term collagen supplementation was linked to improved skin firmness and hydration, but did not help skin roughness — a proxy for visible wrinkles.
Benefits appear to accumulate gradually, suggesting that collagen should not be viewed as an “anti-wrinkle ‘quick fix,’ but as a foundational dermal support for individuals seeking holistic skin maintenance,” the researchers said.
“If we define anti-aging as a product or technique designed to prevent the appearance of getting older, then I believe our findings do support this claim for some parameters,” Smith told the BBC. “For example, an improvement in skin tone and moisture is associated with a more youthful-looking appearance.”
Collagen supplementation was linked to reduced pain and stiffness in people with osteoarthritis, with stronger benefits seen over longer periods of use, and showed modest improvements in muscle mass and tendon structure that may support healthy aging.
Collagen did not significantly improve skin roughness, a marker of visible wrinkles. (iStock)
However, it did not show meaningful results when used as a fast-acting sports performance supplement, and evidence for benefits related to cholesterol, blood sugar, blood pressure and oral health was mixed or inconclusive.
Dr. Daniel Ghiyam, a California-based physician and longevity specialist, said the findings align with what he sees in clinical practice.
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“Collagen is a targeted support tool, not a foundation of health or performance,” Ghiyam, who was not involved in the study, told Fox News Digital. “When marketed that way, it makes sense. When marketed as a cure-all, it doesn’t hold up to the data.”
The authors noted that while many previous collagen studies have received financial support from the supplement industry, the current review did not receive industry funding.
Experts say collagen supplements may offer modest benefits for skin hydration and joint comfort, but they are not a cure-all. (iStock)
The team called for more high-quality clinical trials examining long-term outcomes, optimal dosages and differences between collagen sources, such as marine, bovine and plant-based alternatives.
Among its limitations, the review could not determine whether certain forms of collagen work better than others or what the optimal regimen should be.
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While the review included randomized controlled trials, the quality of the studies varied, with newer research generally showing stronger results.
Experts say more data and studies are needed to build on the findings. They also noted that diet plays a crucial role in skin health.
Collagen supplements, often sold as powders or pills, may improve skin elasticity and ease joint pain, experts say. (iStock)
Dr. Erum Ilyas, a Pennsylvania-based dermatologist and chair of dermatology at Drexel University College of Medicine, noted that the review analyzed previously published meta-analyses rather than generating new primary data.
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“At this time, I have not seen sufficiently strong independent evidence to routinely recommend collagen supplements to my patients,” Ilyas, who was not involved in the review, told Fox News Digital.
“Although some studies show modest improvements in markers such as hydration and elasticity, there remains limited independent, biopsy-confirmed evidence demonstrating sustained increases in dermal collagen content,” she added.
Fox News Digital has reached out to the researchers for comment.
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As colorectal cancer (CRC) is now the leading cause of cancer death in adults under 50, a new report reveals some surprising shifts in the incidence of the disease.
Although rates of CRC have been declining among seniors, those 65 and under are facing a rise in diagnoses, according to a report titled Colorectal Cancer Statistics, 2026, from the American Cancer Society.
Adults 65 and younger comprise nearly half (45%) of all new colorectal cancer cases — a significant increase from 27% in 1995, states the report, which was published in CA: A Cancer Journal for Clinicians.
The disease is rising fastest among adults 20 to 49 years old, at a rate of 3% per year.
Colorectal cancer is now the leading cause of cancer death in adults under 50. (iStock)
Among adults 50 and under, 75% of colorectal cancers are diagnosed at an advanced stage. Half of the diagnoses in that age range are made between the ages of 45 and 49. Although that age group is eligible to receive routine screenings, just 37% do so.
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The report also revealed that rectal cancer is on the rise, now accounting for about one-third (32%) of all CRC cases — an increase from 27% in the mid-2000s.
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“After decades of progress, the risk of dying from colorectal cancer is climbing in younger generations of men and women, confirming a real uptick in disease because of something we’re doing or some other exposure,” said Rebecca Siegel, senior scientific director, surveillance research at the American Cancer Society and lead author of the report, in a press release.
Among adults 50 and under, 75% of colorectal cancers are diagnosed at an advanced stage. Half of the diagnoses in that age range are made between the ages of 45 and 49. (iStock)
“We need to redouble research efforts to understand the cause, but also circumvent deaths through earlier detection by educating clinicians and the general public about symptoms and increasing screening in people 45-54 years.”
It is projected that 158,850 new cases of colorectal cancer will be diagnosed this year, and that the disease will cause 55,230 deaths, per the report.
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More than half of CRC cases can be linked to high-risk behaviors, the researchers said. Those include lack of nutrition, high alcohol consumption, smoking, lack of exercise and obesity.
“These findings further underscore that colorectal cancer is worsening among younger generations and highlight the immediate need for eligible adults to begin screening at the recommended age of 45,” said Dr. William Dahut, chief scientific officer at the American Cancer Society.
When the disease is caught at a local (early) stage, the five-year survival rate is 95%. (iStock)
“The report also shines a light on the crucial importance of continued funding for research to help discover new therapies to treat the disease and advance patient care.”
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When the disease is caught at a local (early) stage, the five-year survival rate is 95%, the report stated.
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A new study suggests that middle-aged men may be more vulnerable to faster biological aging, potentially linked to exposure to “forever chemicals.”
The research, published in the journal Frontiers in Aging, examined how perfluoroalkyl and polyfluoroalkyl substances, more commonly known as PFAS, could impact aging at the cellular level.
PFAS are synthetic chemicals commonly used in nonstick cookware, food packaging, water-resistant fabrics and other consumer products, the study noted.
Their chemical structure makes them highly resistant to breaking down, allowing them to accumulate in water, soil and the human body.
Chinese researchers analyzed blood samples from 326 adults enrolled in the U.S. National Health and Nutrition Examination Survey between 1999 and 2000.
A new study suggests that middle-aged men could face accelerated biological aging at the cellular level due to exposure to PFAS. (iStock)
The researchers measured levels of 11 PFAS compounds in participants’ blood and used DNA-based “epigenetic clocks” — tools that analyze chemical changes to DNA to estimate biological age — to determine how quickly their bodies were aging at the cellular level, the study stated.
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Two compounds, perfluorononanoic acid (PFNA) and perfluorooctanesulfonamide (PFOSA), were detected in 95% of participants.
Higher concentrations of those chemicals were associated with faster biological aging in men of certain age groups, but not in women.
“People should not panic.”
The compounds most strongly linked to accelerated aging were not the PFAS chemicals that typically receive the most public attention, the researchers noted.
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“The associations were strongest in adults aged 50 to 64, particularly in men,” Dr. Xiangwei Li, professor at Shanghai Jiao Tong University School of Medicine and the study’s corresponding author, told Fox News Digital.
“While this does not establish that PFAS cause aging, it suggests that these widely present ‘forever chemicals’ may be linked to molecular changes related to long-term health and aging.”
The study found that two of the compounds were detected in 95% of participants, and higher levels were linked to faster biological aging in men ages 50–64. (iStock)
Midlife may represent a more sensitive biological period, when the body becomes more vulnerable to age-related stressors, according to the researchers.
Lifestyle factors, such as smoking, may influence biological aging markers, potentially increasing vulnerability to environmental pollutants.
While Li said “people should not panic,” she does recommend looking for reasonable ways to reduce exposure.
That might mean checking local drinking water reports, using certified water filters designed to reduce PFAS, and limiting the use of stain- or grease-resistant products when alternatives are available.
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Meaningful reductions in PFAS exposure will likely depend on broader regulatory action and environmental cleanup efforts, Li added.
The researchers noted that midlife could be a particularly sensitive stage, when the body is more susceptible to stressors associated with aging. (iStock)
Study limitations
The researchers outlined several important limitations of the research, including that the findings show an association, but do not prove that PFAS directly causes accelerated aging.
“The study is cross-sectional, meaning exposure and aging markers were measured at the same time, so we cannot determine causality,” Li told Fox News Digital.
The study was also relatively small, limited to 326 adults age 50 or older, which means the findings may not apply to younger people or broader populations.
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Researchers measured PFAS levels using data collected between 1999 and 2000, and today’s exposure patterns may differ.
Li added that while PFAS is known to persist in the environment and the body, these results should be validated through larger, more recent studies that follow participants over time.
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