Health
Major cannabis study finds little proof for popular medical claims, flags big dangers
NEWYou can now listen to Fox News articles!
Cannabis has been linked to some significant medical benefits, but recent research calls those into question.
A major new analysis published in JAMA examined more than 2,500 scientific papers from the last 15 years, including other reviews, clinical trials and guidelines focused on medical marijuana.
“While many people turn to cannabis seeking relief, our review highlights significant gaps between public perception and scientific evidence regarding its effectiveness for most medical conditions,” Dr. Michael Hsu of University of California – Los Angeles (UCLA) Health Sciences, author of the study, said in a press release.
Many medical claims about cannabis are not supported by strong scientific evidence, according to a comprehensive review published in JAMA. (iStock)
The researchers — led by UCLA with contributions from Harvard, UC San Francisco, Washington University School of Medicine and New York University — set out to determine how strong the research is on the effectiveness of medical cannabis and to offer evidence-based clinical guidance.
MYSTERIOUS MARIJUANA-LINKED VOMITING DISORDER GETS OFFICIAL WHO CODE AS ER CASES JUMP
The review found that evidence supporting most medical uses of cannabis or cannabinoids is limited or insufficient, the release stated.
“Whenever a substance is widely used, there is likely to be a very wide set of outcomes,” Alex Dimitriu, MD, double board-certified in Psychiatry and Sleep Medicine and founder of Menlo Park Psychiatry & Sleep Medicine, told Fox News Digital.
“Cannabis is now used by about 15 to 25% of U.S. adults in the past year, for various reasons ranging from recreational to medicinal. This study points to the reality that this widely used substance is not a panacea,” said Dimitriu, who was not involved in the study.
There are very few conditions for which cannabinoid therapies have clear, well-established benefits backed by high-quality clinical data, according to the researchers.
HEAVY DRINKERS CUT ALCOHOL USE BY NEARLY 30% AFTER ADOPTING ONE NEW HABIT, STUDY FINDS
The strongest evidence supports FDA-approved cannabinoid medications for treating specific conditions, including HIV/AIDS-related appetite loss, chemotherapy-induced nausea and vomiting, and certain severe pediatric seizure disorders.
The review identified significant safety concerns, with high-potency cannabis use among young people linked to higher rates of mental health issues. (iStock)
For many other conditions that are commonly treated with cannabis — such as chronic pain, insomnia, anxiety or post-traumatic stress disorder — evidence from randomized trials did not support meaningful benefit.
CLICK HERE TO DOWNLOAD THE FOX NEWS APP
The analysis also examined safety concerns — in particular, how young people using high-potency cannabis may be more likely to suffer higher rates of psychotic symptoms and anxiety disorder.
Daily inhaled cannabis use was also linked to increased risks of coronary heart disease, myocardial infarction (heart attack) and stroke when compared with non-daily use.
Daily inhaled cannabis use is associated with increased cardiovascular risks, including coronary heart disease, heart attack and stroke. (iStock)
Based on these findings, the review emphasizes that clinicians should weigh potential benefits against known risks when discussing cannabis with patients.
CLICK HERE FOR MORE HEALTH STORIES
The authors suggest that clinicians screen patients for cardiovascular risk, evaluate mental health history, check for possible drug interactions and consider conditions where risks may outweigh benefits.
CLICK HERE TO SIGN UP FOR OUR HEALTH NEWSLETTER
They recommend open, realistic conversations and caution against assuming that cannabis is broadly effective for medical conditions.
The review highlights the need for caution, urging clinicians to weigh risks, screen patients appropriately and avoid assuming cannabis is broadly effective. (iStock)
“Patients deserve honest conversations about what the science does and doesn’t tell us about medical cannabis,” Hsu said.
This article is a narrative review rather than a systematic review, so it did not use the strict, standardized methods that help reduce bias in how studies are selected and evaluated, the researchers noted.
TEST YOURSELF WITH OUR LATEST LIFESTYLE QUIZ
The review notes further limitations, including that some evidence comes from observational research rather than randomized trials, which means it cannot establish cause and effect.
The trial results also may not apply to all populations, products or doses.
Health
How a Vegan Diet Can Help You Lose Weight 8X Faster
Use left and right arrow keys to navigate between menu items.
Use escape to exit the menu.
Sign Up
Create a free account to access exclusive content, play games, solve puzzles, test your pop-culture knowledge and receive special offers.
Already have an account? Login
Health
Cancer-linked herbicide in the spotlight after controversial order: ‘Toxic by design’
NEWYou can now listen to Fox News articles!
There has been a shake-up in the Make America Healthy Again movement regarding glyphosate, a widely used herbicide that has been the subject of significant controversy.
The debate follows an executive order signed by President Donald Trump that ensures an adequate supply of elemental phosphorus and glyphosate-based herbicides related to national defense.
MAHA supporters have previously pushed a pesticide-free agenda, warning of potential health harms caused by glyphosate.
Dr. Marc Siegel, Fox News senior medical analyst, said he believes there is sufficient evidence linking glyphosate to neurodegenerative diseases, including ALS, Parkinson’s and multiple sclerosis, to warrant limiting exposure.
President Donald Trump signed an executive order that ensures an adequate supply of elemental phosphorus and glyphosate-based herbicides related to national defense. (AP Photo/Charlie Neibergall)
“With Parkinson’s, this association appears to be due to the gut, vagus nerve and brain axis, where the exposure affects the microbiome in the gut, which then ascends slowly up to the brain, causing the neurodegenerative disease years later,” Siegel told Fox News Digital.
“There is also a growing association being found between high-dose glyphosate or occupational exposure and metabolic disorders, liver disease and some cancers, specifically lymphoma.”
He added, “Growing research backs this. I favor limiting it.”
“When we apply them across millions of acres and allow them into our food system, we put Americans at risk.”
Studies have shown that glyphosate, which is used in products such as Roundup, owned by Monsanto, could raise cancer risk.
In one University of Washington study published in the journal Mutation Research, researchers found that exposure to it increased the risk of non-Hodgkin lymphoma by 41%.
The nonprofit Investigate Midwest, which analyzed data from both the U.S. Geological Survey and the National Cancer Institute, also recently found that pesticides may contribute to cancer rates.
RFK JR BACKS BEEF, DECLARING ‘WAR ON PROTEIN IS OVER’ AS HE THANKS AMERICA’S CATTLE RANCHERS
Among the top 500 counties for per-square-mile pesticide use, more than 60% had cancer rates above the national average of 460 cases per 100,000 people, according to the report.
Investigate Midwest, which is based in Illinois, interviewed more than 100 farmers, environmentalists, lawmakers and scientists as part of a partnership with the Pulitzer Center’s StoryReach U.S. Fellowship.
Among the top 500 counties for per-square-mile pesticide use, more than 60% had cancer rates above the national average of 460 cases per 100,000 people, according to one study. (iStock)
Iowa, which used 53 million pounds of pesticides last year, holds the nation’s title for second-highest cancer rate.
Bill Billings, a resident of Red Oak, Iowa, was diagnosed with cancer in 2014.
“The cancer specialist said, very directly, (my) cancer is a result of being exposed to chemicals,” Billings said in the report.
Kelly Ryerson, founder of Glyphosate Facts and owner of the Instagram account @glyphosategirl, told Fox News Digital her journey researching the herbicide began with her own health struggles.
Ryerson, who is based in California, previously struggled with chronic illness and autoimmune issues, which she said improved when she stopped eating gluten.
Iowa, which used 53 million pounds of pesticides last year, holds the nation’s title for second-highest cancer rate. (iStock)
After attending a medical conference at Columbia University’s Celiac Disease Center, Ryerson began to question modern farming practices rather than the gluten itself.
“A lot of times, farmers are spraying Roundup on our grains right before harvest to facilitate an easier harvest,” she said. “After that easier harvest, because everything’s dry at the same time, those crops go directly to the mill and may end up in our food supply, at alarmingly high levels.”
CLICK HERE FOR MORE LIFESTYLE STORIES
In 2015, the International Agency for Research on Cancer (IARC), part of the World Health Organization framework, classified glyphosate as “probably carcinogenic to humans.”
The classification was based on limited evidence of cancer in humans (notably non-Hodgkin lymphoma in some studies) and sufficient evidence in experimental animals.
“President Trump’s executive order reinforces the critical need for U.S. farmers to have access to essential, domestically produced crop protection tools, such as glyphosate,” a Monsanto spokesperson said. (Wolf von Dewitz/picture alliance via Getty Images)
A spokesperson for Monsanto told Fox News Digital it will comply with Trump’s order to produce glyphosate and elemental phosphorus.
“President Trump’s executive order reinforces the critical need for U.S. farmers to have access to essential, domestically produced crop protection tools, such as glyphosate,” the spokesperson said.
CLICK HERE TO DOWNLOAD THE FOX NEWS APP
HHS Secretary Robert F. Kennedy Jr. has long been a vocal critic of Roundup, working with his legal team in 2018 to award $289 million to a man who alleged the weed killer caused his non-Hodgkin lymphoma, according to reports.
Following backlash to Trump’s executive order, Kennedy said he supports the order but acknowledged that “pesticides and herbicides are toxic by design, engineered to kill living organisms.”
TEST YOURSELF WITH OUR LATEST LIFESTYLE QUIZ
“When we apply them across millions of acres and allow them into our food system, we put Americans at risk,” he posted on X. “Chemical manufacturers have paid tens of billions of dollars to settle cancer claims linked to their products, and many agricultural communities report elevated cancer rates and chronic disease.”
Fox News Digital reached out to the White House for comment.
Health
Common nighttime noise exposure may trigger heart problems, study suggests
NEWYou can now listen to Fox News articles!
Living near heavy traffic could negatively impact your heart health.
A European study, published in the journal Environmental Research, found that exposure to nighttime road traffic noise is linked to changes in the blood, leading to worsened cholesterol and cardiovascular risks.
The researchers considered data from the U.K. Biobank, Rotterdam Study, and Northern Finland Birth Cohort 1966, including more than 272,000 adults over the age of 30, according to a press release.
Nighttime road noise exposure was estimated at all participants’ homes based on national noise maps. Researchers also took blood samples to measure the participants’ metabolic biomarkers for disease, then mapped the link between nightly noise levels and existence of biomarkers.
Exposure to loud noise was associated with increased concentrations of cholesterol-related biomarkers. (iStock)
The study found that people exposed to louder noise at night — especially sounds above 55 decibels — showed changes in 48 different substances in their blood. Twenty of these associations “remained robust” throughout all cohorts.
Exposure to loud noise was associated with increased concentrations of cholesterol-related biomarkers, especially LDL “bad” cholesterol, IDL (intermediate-density lipoprotein) and unsaturated fatty acids.
NEARLY 90% OF AMERICANS AT RISK OF SILENT DISEASE — HERE’S WHAT TO KNOW
As noise levels increased, starting at around 50 decibels, cholesterol markers rose steadily, the release stated.
The authors concluded that this study “provides evidence that nighttime road traffic noise exposure from 50 dB upward is associated with alterations in blood cholesterol and lipid profiles in adults.”
Researchers noted a link between traffic noise and cardiometabolic disease. (iStock)
Study co-author Yiyan He, doctoral researcher at the University of Oulu in Finland, noted that in this type of research, small effect sizes are expected, and environmental exposures such as traffic noise are “typically modest.”
SIMPLE NIGHTLY HABIT LINKED TO HEALTHIER BLOOD PRESSURE, STUDY SUGGESTS
“Despite this, we observed statistically robust and consistent associations across many biomarkers, especially those related to LDL and IDL lipoproteins,” she told Fox News Digital.
MISSING SLEEP MAY TAKE A HIDDEN TOLL ON YOUR BRAIN AND LONGEVITY, RESEARCH REVEALS
“We also identified a clear exposure-response pattern starting at around 50 dB, suggesting that metabolic changes become more evident as noise levels increase.”
This aligns with public health guidance, as the World Health Organization recommends lower nighttime noise limits at around 40 to 45 dB, Yiyan He added.
“This finding may clarify the association between traffic noise and cardiometabolic diseases,” the researchers wrote. (iStock)
“The 55 dB level is often used as an interim benchmark associated with substantial noise annoyance and sleep disturbance,” she said. “In our study, we observed associations not only at 55 dB, but also indications of effects emerging at around 50 dB.”
The strength and consistency of the cholesterol-related associations were surprising, as these changes are usually “subtle.”
CLICK HERE TO DOWNLOAD THE FOX NEWS APP
“Instead, we found consistent associations across multiple large European cohorts, which strengthens confidence that the findings may reflect real biological patterns,” Yiyan He went on. “We were also interested to see that effects were minimal below ~50 dB, suggesting a possible threshold-like pattern.”
HEART DISEASE THREAT PROJECTED TO CLIMB SHARPLY FOR KEY DEMOGRAPHIC
The researcher noted that these findings were consistent across genders, education levels and obesity status.
The study was restricted to White Europeans, which posed a limitation. There was also a lack of information on the fasting status in the UK Biobank.
Changes in cholesterol levels were more severe than researchers expected. (iStock)
“Fasting can influence levels of certain metabolites, particularly fatty acids,” Yiyan He said. “However, based on UK Biobank documentation, fewer than 10% of participants were fasting for at least eight hours, and our main findings focused on cholesterol-related biomarkers, which are generally less sensitive to short-term fasting.”
CLICK HERE FOR MORE HEALTH STORIES
The researchers also lacked information on bedroom location, indoor noise exposure and time spent at home.
“These factors may introduce non-differential exposure misclassification,” Yiyan He said. “Additionally, noise exposure estimates were based on participants’ temporary residential addresses at the time of blood sampling, without considering the duration of residence.”
CLICK HERE TO SIGN UP FOR OUR HEALTH NEWSLETTER
“Many of these limitations would tend to bias results toward the null, so the consistent associations we observed remain noteworthy.”
Experts recommend taking measures to limit traffic noise at night. (iStock)
Based on this latest research, Yiyan He noted that nighttime noise is a “health-relevant exposure,” not just “an annoyance.”
“Our findings suggest that nighttime traffic noise may subtly but consistently affect metabolic health,” she said. “While the changes in cholesterol and lipid levels for any one individual are small, traffic noise affects a very large number of people, which means the potential public health impact could be substantial.”
TEST YOURSELF WITH OUR LATEST LIFESTYLE QUIZ
The researcher recommends taking measures like improving sound insulation, using noise-reducing strategies and placing bedrooms on the quieter side of the home when possible.
“Because sleep is a key pathway linking noise to health, protecting the nighttime sleep environment is especially important,” she added.
-
World3 days agoExclusive: DeepSeek withholds latest AI model from US chipmakers including Nvidia, sources say
-
Massachusetts4 days agoMother and daughter injured in Taunton house explosion
-
Montana1 week ago2026 MHSA Montana Wrestling State Championship Brackets And Results – FloWrestling
-
Louisiana6 days agoWildfire near Gum Swamp Road in Livingston Parish now under control; more than 200 acres burned
-
Denver, CO4 days ago10 acres charred, 5 injured in Thornton grass fire, evacuation orders lifted
-
Technology1 week agoYouTube TV billing scam emails are hitting inboxes
-
Technology1 week agoStellantis is in a crisis of its own making
-
Politics1 week agoOpenAI didn’t contact police despite employees flagging mass shooter’s concerning chatbot interactions: REPORT