Cannabis use linked to higher cardiovascular risks, including stroke, in new study

A study by researchers at Tulane University School of Medicine, presented at the American Heart Association’s Scientific Sessions, suggests a potential link between cannabis use and increased risks of cardiovascular disease, particularly stroke. The findings, based on data from nearly 500,000 adults, indicate that both occasional and heavy users may face elevated risks, though the relationship remains complex and requires further investigation.

Tarun Mottlia

Editor, Lazyfounder

Published Nov 3, 20263 min read

Cannabis use linked to higher cardiovascular risks, including stroke, in new study — Image: Gizmodo via source

KEY HIGHLIGHTS

Researchers at Tulane University analyzed data from nearly 500,000 adults, finding a 20% higher likelihood of cardiovascular issues among cannabis users.
Less frequent cannabis users showed a 40% higher stroke risk, while heavy users had a 25% higher risk.
No clear link was found between cannabis use and heart attack risk, regardless of consumption method.
Findings are preliminary and not yet peer-reviewed but align with growing evidence of cannabis-related cardiovascular risks.

What the study found

Researchers at Tulane University analyzed survey data from nearly 500,000 adults collected through the Centers for Disease Control and Prevention’s Behavioral Risk Factor Surveillance System (BRFSS). The study focused on self-reported cannabis use and cardiovascular health outcomes.

According to the findings, people who reported using cannabis were 20% more likely to also report having experienced cardiovascular issues compared to non-users. The risk of stroke was particularly notable: less frequent users showed a 40% higher risk, while heavy users had a 25% higher risk.

The study did not find a clear link between cannabis use and heart attack risk. Additionally, the method of consumption—whether smoking or edibles—did not significantly alter the reported risks.

Limitations and context

The findings are preliminary and have not yet undergone peer review, meaning they should be interpreted with caution. The study relies on self-reported data, which can introduce biases or inaccuracies.

However, the results align with other research suggesting potential cardiovascular risks associated with cannabis use. For example, earlier studies have linked cannabis legalization in the U.S. to increased hospitalizations for cardiovascular disease, including heart attacks.

The researchers emphasized that healthcare professionals should discuss cannabis use with patients, given the growing body of evidence pointing to its potential health impacts.

What this means

Lazyfounder analysis — our interpretation, not reported fact.

This study adds to a growing but still inconclusive body of evidence about the health risks of cannabis use. For founders and operators in the cannabis industry, the findings could signal future regulatory challenges or shifts in consumer behavior. If further research confirms these risks, companies may face pressure to adjust marketing strategies, disclosure practices, or product formulations.

For those in health-tech or public health, the study underscores the importance of integrating cannabis use into patient screenings and risk assessments. Investors, meanwhile, should monitor how this evolving research landscape might affect market dynamics or liability risks for cannabis-related ventures.

Key takeaways

Founders in the cannabis, wellness, or health-tech sectors may need to anticipate stricter regulatory scrutiny or labeling requirements as evidence of health risks grows.
Operators in public health or medical research should note the study’s emphasis on patient-provider discussions about cannabis use, which could shape clinical guidelines.
Investors in cannabis-related startups should weigh the potential for increased liability or market restrictions as research into cardiovascular risks advances.

Sources

Gizmodo · 2026-11-02
Scientists Link Cannabis to Stroke—and Casual Users Aren’t Off the Hook

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