Health
Disposable vapes more toxic and carcinogenic than cigarettes, study shows
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Illegal disposable e-cigarettes, also known as vapes, may present a greater danger than traditional cigarettes, according to a study from the University of California (UC) Davis.
The research, published in the journal ACS Central Science, found that hazardous levels of several toxic heavy metals in illegal vapes could present a high cancer risk.
Researchers used a special instrument to test the puffs from three popular vape brands — ELF Bar, Flum Pebble and Esco — that are not FDA-authorized for use in the U.S., but are widely sold by retailers.
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Three heavy metals — lead, nickel and antimony — were detected in all heavily flavored and lightly flavored devices that were tested.
These metals are classified as carcinogens, potentially leading to various types of cancers, such as skin, lung and kidney, according to the National Institutes of Health (NIH).
UC Davis researchers have discovered high levels of toxic metals in some popular disposable vape brands. (iStock)
All vapors exceeded the cancer risk limits for nickel, which has been linked to cardiovascular disease, asthma, lung fibrosis and respiratory tract cancer, per NIH.
Brett Poulin, senior study author and assistant professor at the UC Davis Department of Environmental Toxicology, told Fox News Digital that he was shocked at the levels of toxic metals.
“When I analyzed the first samples, the lead concentrations were so high that I genuinely thought the instrument was broken,” he said. “The levels far exceeded anything in our past data, or even the published literature.”
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One of the brands tested exposes users to as much lead as smoking 19 packs of cigarettes, the researchers discovered.
Additionally, most of the disposable e-cigarettes tested in the study were found to contain greater levels of metals and metalloids than older refillable vapes.
After evaluating about a week’s worth of puffs, the researchers determined that lead, nickel and antimony were detected in all tested vapes. (iStock)
At one point, Poulin said, he physically opened a device and discovered that it was using leaded copper alloys, which are metals made primarily of copper with small amounts of lead.
“These materials leached dangerous levels of lead into the e-liquid, even without the device being used,” Poulin told Fox News Digital.
“It remains unclear whether this was an intentional design choice, a cost-cutting measure or a manufacturing oversight.”
“This neurotoxin poses serious health risks, particularly to children and adolescents.”
There is no known safe level of lead exposure, according to Poulin.
“This neurotoxin poses serious health risks, particularly to children and adolescents, who are especially vulnerable.”
Daniel Sterman, M.D., director of the Pulmonary Oncology Program at the NYU Langone Perlmutter Cancer Center, told Fox News Digital that the study “clearly” demonstrates high concentrations of metal.
Men were found to be more likely to vape than women, according to the CDC. (iStock)
“There are several health risks of vaping that we enumerate for our patients and their family members, [such as] risks of various lung diseases, including asthma, COPD and lung cancer,” said Sterman, who was not involved in the study.
The doctor noted that while it is challenging to establish a direct link of causation between disposable vapes and cancer, he does see cancer patients who use the devices.
“Disposable vapes should be highly regulated by local, state and federal agencies, and restricted to those individuals 21 years or older,” Sterman recommends.
The doctor also called for the packaging on disposable vapes to clearly outline the many health risks, “particularly to teenagers and young adults.”
Potential limitations
One of the primary limitations of the study was that only three disposable e-cigarette brands were tested out of the hundreds currently on the market.
There are distinct differences in the metal leaching and profiles across all three brands, Poulin shared.
The Center for Disease Control (CDC) found that the percentage of adults who used electronic cigarettes increased from 4.5% in 2019 to 6.5% in 2023. (iStock)
“We still know very little about the metal content in the vast majority of untested disposable e-cigarette products,” he said. “This gap in knowledge poses a significant public health concern, especially given the popularity of these devices.”
A spokesperson for the China-based brand, ELFBAR, told Fox News Digital that they refute the results of the study, claiming that they stopped shipments in May 2023.
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Due to ongoing trademark litigation, they are unable to market or sell products in the U.S., the company stated.
“This market void has led to a surge in counterfeits, imitations and illicit variations misusing our brand name,” the spokesperson said. “As such, we have every reason to believe the devices tested in this study are not genuine and were not manufactured by ELFBAR.”
Many disposable vapes that are not FDA-authorized for use in the U.S. are widely sold by retailers. (Mike Kemp/In Pictures via Getty Images)
The spokesperson acknowledged that smoking remains the leading cause of preventable death and disease worldwide, noting that the recent study “continues to undermine public understanding of smoking cessation.”
The other two brands tested in the study did not respond to requests for comment.
“Disposable vapes should be highly regulated by local, state and federal agencies and restricted to those individuals 21 years or older.”
Electronic cigarette use among adults increased from 4.5% in 2019 to 6.5% in 2023, according to the U.S. Centers for Disease Control and Prevention (CDC).
Men are more likely to vape than women, while 15.5% of young adults between the ages of 21 and 24 reported using e-cigarettes, the above source states.
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The UC Davis study received support from the University of California Tobacco-Related Disease Research Program Grant and the California Agricultural Experiment Station.
Health
How much red meat is too much? Experts weigh in on food pyramid updates
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The release of an updated food pyramid this week has sparked mixed reactions from doctors and dietitians.
One of the most noteworthy shifts in the 2025-2030 Dietary Guidelines for Americans — announced by HHS officials during a Jan. 7 press conference at the White House — is a greater emphasis on “high-quality proteins,” including red meat and eggs, as well as full-fat dairy.
The new guidelines focus on “real, whole, nutrient-dense foods,” and a dramatic reduction in highly processed foods, added sugars, refined carbohydrates and unhealthy fats.
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“Protein and healthy fats are essential and were wrongly discouraged in prior dietary guidelines,” Health Secretary Robert F. Kennedy Jr. said during the press conference. “We are ending the war on saturated fats.”
Nick Norwitz, a Harvard- and Oxford-trained researcher known for his work in metabolic health, shared his reaction to the new guidelines.
The release of an updated food pyramid this week has sparked mixed reactions from doctors and dietitians. (realfood.gov)
Despite how the new pyramid is presented, he noted, the actual guidelines for saturated fat consumption haven’t changed, as they still state that, “in general, saturated fat consumption should not exceed 10% of total daily calories.”
The intake of unprocessed whole foods rich in saturated fat, especially dairy fat, tends to be associated with improved health outcomes, according to Norwitz.
RED MEAT CAN HELP YOUR MOOD IF PART OF A HEALTHY, BALANCED DIET, STUDY SUGGESTS
“Full-fat dairy — especially cheese, for example — tends to be associated with lower BMI, reduced rates of diabetes and even reduced dementia risk,” he told Fox News Digital. “There are, of course, nuances — but ‘ending the war’ on saturated fat seems reasonable.”
Risks vary, experts say
Experts cautioned about the potential health risks of exceeding the recommended intake of saturated fat, including higher rates of LDL “bad” cholesterol, which is known to increase the risk of cardiovascular disease.
“The recommendation to limit saturated fat to 10% of total calories is based on the research showing that higher rates increase LDL cholesterol and associated risks for cardiovascular disease,” Sherry Coleman Collins, a food allergy dietitian and expert from the Atlanta metropolitan area, told Fox News Digital.
One of the most noteworthy shifts in the 2025-2030 Dietary Guidelines for Americans is a greater emphasis on “high-quality proteins” — including red meat and eggs — as well as full-fat dairy. (iStock)
Nutrition should be personalized and is dependent on multiple factors, she said, including age, gender, activity level and genetic risk factors.
“The total saturated fat an individual might safely consume is influenced by their size and total calorie needs, as well as potentially genetic differences,” Coleman Collins said.
Norwitz agreed, adding that “the specific food source and interaction with the unique host and their broader dietary context should take the spotlight.”
Dr. Pooja Gidwani, a double board-certified doctor of internal medicine and obesity medicine in Los Angeles, pointed out that not everyone has the same “tolerance” for saturated fats.
“If increasing saturated fat leads to a meaningful rise in LDL cholesterol or ApoB (Apolipoprotein B, a protein found on the surface of certain cholesterol-carrying particles in the blood), that intake level is excessive for that individual, regardless of improvements in weight or glucose metrics,” she said.
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“This personalized approach becomes increasingly important in midlife and beyond, when cardiovascular disease becomes the dominant driver of morbidity and mortality and when tolerance for cumulative atherogenic (artery-clogging) exposure is lower.”
For those who need to reduce LDL cholesterol or have a higher cardiovascular risk, the American Heart Association recommends an even lower amount of saturated fats — less than 6% of total daily calories.
Experts cautioned about the potential health risks of exceeding the recommended intake of saturated fat, including higher rates of LDL “bad” cholesterol. (iStock)
Gidwani also cautioned that diets emphasizing saturated fat could crowd out fiber and unsaturated fats, “both of which play independent roles in cholesterol clearance, insulin sensitivity, gut health and inflammation.”
“Saturated fat-heavy patterns are also calorie-dense, which can quietly undermine long-term weight management if intake is not carefully regulated,” she added.
Not all saturated fats are equal, experts say
The effects of saturated fat depend on what specific foods are being consumed, according to experts.
“I would recommend choosing minimally processed or unprocessed forms of foods,” said Tanya Freirich, a registered dietitian nutritionist in Charlotte, North Carolina. “For example, in place of a hot dog — which has additives, nitrites, sodium and fillers — consuming a chicken thigh would be a much better choice.”
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Gidwani reiterated that the amount of processing plays a big role.
“Processed meats are consistently associated with worse cardiometabolic outcomes and represent the clearest category to limit,” she said. “The risk here is not only saturated fat, but also sodium load, preservatives and the broader dietary pattern they tend to accompany.”
“Full-fat dairy — especially cheese, for example — tends to be associated with lower BMI, reduced rates of diabetes and even reduced dementia risk,” an expert told Fox News Digital. (iStock)
Unprocessed red meat, the doctor said, can fit into an overall healthy diet in smaller amounts, particularly when consumed alongside fiber-rich plants and minimally processed foods.
“However, from a longevity perspective, it should be viewed as optional rather than foundational, especially for individuals with elevated cardiovascular risk,” she added.
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When it comes to dairy, Gidwani noted that fermented options are “metabolically more favorable” than butter or cream.
“However, saturated fat from dairy is still not necessary to prioritize for metabolic health or longevity,” she said. “Excessive reliance on dairy fat can displace healthier fat sources without offering clear long-term benefit.”
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Overall, the doctor recommends unsaturated fat sources, including extra virgin olive oil, nuts, seeds, avocado and omega-3-rich fish, as primary dietary fats.
“These consistently support lipid profiles, insulin sensitivity and vascular health,” Gidwani said. “Saturated fat can exist within a balanced diet, but it should remain secondary rather than emphasized.”
Why the big picture matters
Saturated fat is just one piece of a much wider nutrition puzzle, the experts agreed.
Unprocessed red meat can fit into an overall healthy diet in smaller amounts, particularly when consumed alongside fiber-rich plants and minimally processed foods, one expert said. (iStock)
“Our heart health is not determined by one type of fat or one type of cholesterol, but the sum of many parts — our entire diet, our exercise habits, our stress and so much more,” Freirich said.
She recommends consulting a registered dietitian for guidance on unique dietary needs based on age, gender, activity level and medical history.
“Our heart health is not determined by one type of fat or one type of cholesterol, but the sum of many parts — our entire diet, our exercise habits, our stress and so much more,” said an expert. (iStock)
New Jersey-based dietitian Erin Palinski-Wade, author of “2-Day Diabetes Diet,” added that the message should be to focus more on overall patterns.
That means “plenty of fiber-rich plants, lean protein at every meal (including those that also contain fiber, such as nuts and seeds) and a reduction in overall intake of added sugars.”
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“That change will drive true health improvements,” she said.
Health
The Wegovy Pill Is Here: See the Cost and How Much Weight You Can Lose
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Health
Missing sleep may take a hidden toll on your brain and longevity, research reveals
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Missing out on adequate sleep could be taking years off your life.
New research from the Oregon Health & Science University (OHSU), published in the journal Sleep Advances, found that poor sleep may shorten life expectancy more than other lifestyle factors like diet, exercise and loneliness.
The researchers analyzed nationwide CDC survey data, identifying trends associated with average life expectancy by county, according to a press release.
NEW HEALTH WARNING ISSUED OVER POPULAR SLEEP AID MILLIONS TAKE NIGHTLY
The study found that lack of adequate sleep led to higher mortality risk in every U.S. state and was the top behavioral driver compared to other factors, only behind smoking.
Senior study author Andrew McHill, Ph.D., associate professor and director of the Sleep, Chronobiology, and Health Laboratory in the OHSU School of Nursing, noted in a statement that he did not expect sleep to be “so strongly correlated” to life expectancy.
Poor sleep is directly correlated with shorter life expectancy, the study reveals. (iStock)
“We’ve always thought sleep is important, but this research really drives that point home: People really should strive to get seven to nine hours of sleep, if at all possible,” he said.
“This research shows that we need to prioritize sleep at least as much as we do [in] what we eat or how we exercise.”
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In a previous interview with Fox News Digital, Dr. Daniel Amen, psychiatrist and owner of Amen Clinics in California, emphasized how important sleep is for brain function and longevity.
Researchers suggest people should prioritize sleep just as much as diet and exercise. (iStock)
“Sleep is so important,” he said. “When you sleep, your brain cleans and washes itself. And if you don’t sleep seven to nine hours at night, your brain looks older than you are — there’s less blood flow, and it increases inflammation in the brain.”
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“Your brain doesn’t have enough time to get rid of the toxins that build up during the day.”
Lack of adequate sleep can lead to poor decisions and foster toxic cycles, the doctor warned.
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“If your brain has less activity in the front part, not only are you tired, but you’re also hungrier, and you’re more likely to not make the best decisions,” he said.
“Which, of course, will stress you out, and then you won’t sleep well the next night.”
A doctor suggests being “purposeful” about going to bed and waking up each day. (iStock)
One small change to promote longevity and brain health is to try getting to bed 15 minutes earlier, Amen suggested.
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“Really be purposeful about not being distracted by Netflix or your phone,” he said.
“And when you get up in the morning, say to yourself, ‘Today is going to be a great day.’ The more positive you are, the better your brain.”
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