Health

Shocking Study Links Cannabis Use to Heart Disease: What You Need to Know

2025-05-30

Author: Ling

In a groundbreaking study from UC San Francisco, researchers have uncovered alarming connections between cannabis consumption—both smoking and edibles—and an increased risk of heart disease.

The Surprising Findings

Published in JAMA Cardiology, the study found that the cardiovascular risks associated with eating cannabis gummies are identical to those posed by smoking marijuana. The culprit? Reduced blood vessel function.

Who Was Studied?

The study involved 55 seemingly healthy adults aged 18 to 50. Participants were divided into three groups: regular marijuana smokers, those who often consumed THC-infused edibles, and a control group of non-users.

Heavy Use, Heavy Risks

Individuals in both cannabis-using groups had been indulging at least three times a week for a year, with smokers averaging a decade of usage and edibles users around five years.

Shocking Results: Decreased Vascular Function

Testing revealed that all cannabis consumers exhibited significantly reduced vascular function, akin to that of tobacco smokers. Their blood vessel performance was about half as effective compared to non-users, leading to heightened risks for heart attack and high blood pressure.

A Deeper Look into the Risks

While both smoking and consuming edibles affected vascular health, the mechanisms differed. Smokers displayed damaging changes in blood serum affecting vascular lining cells, a phenomenon not seen in edible consumers.

Expert Opinions: A Cause for Concern

Cardiologist Dr. Bradley Serwer emphasized that the findings are consistent with existing research linking THC compounds to negative health outcomes. He warned that chronic use poses serious cardiovascular risks.

Study Limitations

However, the study had limitations, including a small sample size and variability in cannabis strains, which could complicate results. The researchers noted that lifestyle factors—like stress and secondhand smoke—might also influence vascular health.

The Bottom Line

Despite its limitations, the study serves as a stark reminder that cannabis is not without its dangers. Both clinicians and patients must carefully weigh the benefits against the potential risks. As Dr. Serwer puts it, if the risks outweigh the rewards, it might be time to reconsider.

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