Seemingly inconsistent findings display why an ext research into the effects of three on the heart and the rest of the human body is needed.

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There"s more evidence that smoking marijuana can be attention for people with heart disease, follow to two new studies presented freshly at the American love Association’s clinical Sessions. However in an unforeseen twist, human being who use cannabis were less likely to suffer sudden kidney failure, the researcher found.

Patients that smoked marijuana and also underwent angioplasty to clear clogged arteries were more likely to experience stroke and also bleeding after the nonsurgical procedure than those who didn’t usage pot, one examine found. The second study concluded that patients who had survived a heart attack and used marijuana were an ext likely 보다 those who did not usage cannabis to have a subsequent heart attack. Both researches were exit Monday.

“Marijuana is becoming an ext accessible, and also patients have to be conscious of the raised risk after ~ ,” claimed the lead writer of the study, Dr. Sang Gune Yoo, an inner medicine resident in ~ the college of Michigan. “While this are threats to be mindful of, they do not do it deter patients from obtaining this lifesaving procedure.”

In fact, four more states legalized recreational marijuana throughout the 2020 election, pass the total to 15 to add the district of Columbia. Moreover, 34 states, plus D.C., have made medical marijuana legal.

The new findings are another example the why we need an ext studies into the results of cannabis on the wellness of the heart and the rest of the body, Yoo said, noting the its classification by the federal federal government as a Schedule 1 drug has actually hindered scientific research.

The research is particularly relevant because that older Americans. Heart disease is the No. 1 killer in the U.S. And the Centers for condition Control and Prevention estimates that each year approximately 805,000 Americans have a heart attack. The majority, or 605,000, are first-time love attacks. Annually hundreds of countless patients in the U.S. Have coronary angioplasty — a procedure for clogged arteries that boosts blood circulation to the heart, follow to the American love Association. Many of those patients additionally receive stents, a small, cable mesh tube which helps save the artery open.

To take it a closer look in ~ the influence of marijuana on angioplasty outcomes, Yoo and his colleagues examined data ~ above 113,477 Michigan patients, 3,970 of whom self-identified as marijuana users. After corresponding 3,903 users through 3,903 nonusers, the researchers uncovered that much more pot smokers knowledgeable bleeding (5.2 percent vs. 3.4 percent) and strokes (0.3 percent vs. 0.1 percent).

An intriguing finding the the writer couldn’t define was that the marijuana customers were much less likely to experience sudden kidney failure.

Is it THC or the smoke?

In the various other study, i beg your pardon analyzed details from a national database, researchers discovered that amongst patients who had an artery-clearing procedure after ~ a heart attack, those who provided marijuana had a greater rate of subsequent heart attacks than those who don"t usage cannabis, or 7.2 percent vs. 4.5 percent. This study additionally had an intriguing finding: Heart strike risk components — including hypertension, diabetes and high cholesterol — were substantially lower in cannabis users.

Experts contacted by NBC News had mixed reaction to the new reports.


“I have spent the last 25 years studying the impacts of marijuana and THC , and also I think the Yoo examine raises some important questions, especially since we’ve seen an ext and more reports that cardiovascular events emerging in the paper definition of marijuana,” said Dr. Deepak Cyril D"Souza, a professor of psychiatry in ~ the Yale University college of Medicine. “This is an exciting paper.”

One question the examine can’t answer is even if it is the increased risks come from the marijuana, the THC in the marijuana or indigenous the exhilaration that comes from burning a plant-based product, D"Souza said.

“In our researches on THC, we uncovered a an extremely robust increase in love rate and also an effect on blood press that deserve to be rather profound,” D"Souza said, adding that blood press rose in civilization who were lying down. “Our studies typically included human being who were healthy and also young. Extrapolating come someone who is older and also has cardiovascular issues or other clinical problems, it could be problem if they were to usage marijuana.”

Looking at the totality the the 2 studies, they seem to contain some inconsistent findings, claimed Dr. Peter Grinspoon, a cannabis expert, instructor in ~ Harvard clinical School and board member of medical professionals for three Regulation. ~ above the one hand, Grinspoon said, researchers room reporting boosts in stroke, bleeding and 2nd heart assaults in those using cannabis, however on the other, they room reporting enhancements in cardiovascular hazard factors, such as hypertension, high cholesterol and diabetes.


Grinspoon was specifically struck by the lower rate the kidney failure among those who provided marijuana in the Yoo study.

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“By their measures, they’ve actually shown that three decreases kidney damage, which have to be a vast headline in itself,” that said.

Linda Carroll is a consistent health contributor come NBC News and also Reuters Health. She is coauthor the "The Concussion Crisis: Anatomy that a quiet Epidemic" and also "Out that the Clouds: The unlikely Horseman and the undesirable Colt Who conquered the sport of Kings."