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Smoking marijuana and eating cannabis gummies both linked to dangerous health risk, study finds

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Smoking marijuana and eating cannabis gummies both linked to dangerous health risk, study finds

Long-term cannabis use in any form has been linked to a greater risk of heart disease.

In a new study, researchers at UC San Francisco determined that eating edible cannabis, such as gummies, has the same impact on cardiovascular risk as smoking marijuana.

The risk stems from reduced blood vessel function, according to the study, which was published in JAMA Cardiology on May 28.

HEAVY CANNABIS USE COULD POSE THIS THREAT TO THE BRAIN

The study included 55 people between 18 and 50 years of age who were “outwardly healthy.” 

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The participants were divided into three groups: those who regularly smoked marijuana, those who ate edibles containing THC (tetrahydrocannabinol), and those who didn’t use cannabis, according to a UCSF press release.

Long-term cannabis use in any form has been linked to a greater risk of heart disease, according to a new study. (iStock)

The cannabis users had been consuming the substance at least three times weekly for at least one year. 

On average, the smokers had the habit for 10 years, while those consuming edibles had been doing so for five years, the release noted.

In September 2024, the participants underwent testing to determine how well their blood vessels functioned and whether the cells lining the blood vessels were affected. 

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DEMENTIA RISK CONNECTED TO CANNABIS-RELATED HOSPITAL VISITS, SAYS STUDY

All cannabis users were found to have “decreased vascular function,” comparable to those who smoke tobacco.

Their blood vessel function was roughly half compared to those who did not use cannabis.

This side effect has been linked to a higher risk of heart attack, high blood pressure and other cardiovascular conditions, the researchers noted.

Eating edible cannabis, such as gummies, has the same impact on cardiovascular risk as smoking marijuana, researchers say. (iStock)

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The participants who smoked marijuana were also found to have changes in their blood serum that harmed cells lining their blood vessels and lymphatic vessels, an effect that was not seen in those who ate edible cannabis.

The researchers noted that while smoking marijuana and consuming edibles both affect vascular function, they likely do so for different reasons.

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“Chronic cannabis smoking and THC ingestion were associated with endothelial dysfunction [impaired functioning of the endothelial cells lining the inside of blood vessels] similar to that observed in tobacco smokers, although apparently occurring via distinct mechanisms,” the researchers wrote.

“This study enhances the understanding of the potential risks to vascular health linked to cannabis use and provides more evidence that cannabis use is not benign.”

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All cannabis users were found to have “decreased vascular function,” comparable to those who smoke tobacco. (iStock)

Dr. Bradley Serwer, a Maryland-based cardiologist and chief medical officer at VitalSolution, an Ingenovis Health company that offers cardiovascular and anesthesiology services to hospitals nationwide, said he was not surprised by the study’s findings.

“We have known that the chronic use of THC-containing compounds can have negative health consequences — this study just reaffirms those prior studies,” Serwer, who was not involved in the UCSF research, told Fox News Digital. 

The study did have some limitations.

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“Variability in cannabis strains complicates standardization,” the researchers wrote. “Self-reported cannabis use may introduce recall bias; thus, participants were queried at multiple points: in the online survey, at the eligibility interview and before each visit.”

“This study enhances the understanding of the potential risks to vascular health linked to cannabis use and provides more evidence that cannabis use is not benign,” the researchers said. (iStock)

It was also challenging to determine whether blood vessel function could have also been affected by lifestyle factors like stress, caffeine and secondhand smoke exposure, they noted.

Serwer pointed out that this was a “very small” study of only 55 people, all living in the San Francisco Bay area. 

“The decision to use or avoid it should be made with all benefits and risks in mind.”

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“The study did not allow for variability in the different strains of cannabis, and they used a self-reporting survey, which can be under- or over-reported,” he told Fox News Digital.

“They looked for physiologic endpoints and not hard endpoints, such as heart attacks, strokes or death. We have to infer that the physiologic endpoints would result in cardiovascular events.”

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The cardiologist said he agreed, however, with the conclusion that cannabis use is “not benign.”

“Chronic use does have potential cardiovascular risks,” he warned. “There are therapeutic uses of cannabis, and the decision to use or avoid it should be made with all benefits and risks in mind.”

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“We have known that the chronic use of THC-containing compounds can have negative health consequences — this study just reaffirms those prior studies,” a cardiologist said. (iStock)

In general, Serwer said he cautions all of his patients to avoid any unnecessary cardiac risks. 

“As clinicians, we must weigh the benefits and the risks of a medicine/drug or intervention,” he said. “If the risks outweigh the benefits, it should be avoided.”

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The study was funded mainly by the National Institute on Drug Abuse; the California Department of Cannabis Control; the California Tobacco-Related Disease Program; the National Heart, Lung, and Blood Institute; and the FDA Center for Tobacco Products. 

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Fox News Digital reached out to cannabis industry organizations requesting comment.

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How much red meat is too much? Experts weigh in on food pyramid updates

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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.

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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)

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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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TRUMP ADMIN’S NEW NUTRITION GUIDELINES TARGET ULTRA-PROCESSED FOODS, EASE UP ON RED MEAT AND SATURATED FATS

“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.”

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“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.

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“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.”

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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)

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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.

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The Wegovy Pill Is Here: See the Cost and How Much Weight You Can Lose

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The Wegovy Pill Is Here: See the Cost and How Much Weight You Can Lose


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No Shots Required! Doctors Say the New $25 a Month Wegovy Pill Works | Woman’s World




















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Missing sleep may take a hidden toll on your brain and longevity, research reveals

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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

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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.”

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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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