Health
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.”
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.
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)
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.”
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.
“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.”
“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.”
“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.”
For more Health articles, visit www.foxnews.com/health
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.
Fox News Digital reached out to cannabis industry organizations requesting comment.
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.
DOCTORS WARN SOME POPULAR FOODS AND DRINKS COULD BE SECRETLY SABOTAGING MEN’S TESTOSTERONE LEVELS
“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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