New survey data analyzed by Tulane University researchers and presented for the American Heart Association links cannabis use to higher odds of cardiovascular issues, including a 40 percent increase in stroke risk for occasional users, as separate research tracks climbing hospitalizations following state-level recreational legalization.
Tulane University Survey Analysis and Stroke Risk Findings
Scientists studying nationally representative survey data gathered through the Behavioral Risk Factor Surveillance System between 2020 and 2024 found that adults reporting cannabis use were significantly more likely to also report a history of cardiovascular disease, particularly strokes. The findings, prepared for the American Heart Association’s Scientific Sessions meeting in Chicago, evaluated responses from nearly half a million U.S. adults regarding their cannabis consumption over the previous month (Heart).
Researchers observed an unexpected dosage pattern in the self-reported survey results. While previous multi-year data published in the Journal of the American Heart Association indicated that heavier daily consumption correlated with higher rates of heart attacks and strokes, the newer analysis revealed a different distribution (The American Journal of Managed Care). Participants who reported low-frequency use—defined as one to five days per month—carried higher odds of certain adverse outcomes than those who used cannabis sixteen to thirty days per month (Gizmodo).
We were surprised to find that the link between cannabis use and cardiovascular disease was not straightforward. We expected that the chances of heart disease would gradually rise as people used cannabis more often, but that wasn’t the case. Both low-use and heavy-use groups had higher odds of developing heart disease.
Aabha Divya, assistant professor in the division of cardiothoracic surgery at Tulane University’s School of Medicine, via Gizmodo
Comparison with Earlier Multi-Year Data and Study Limitations
The absence of a clear stepwise dose-response curve distinguishes the recent abstract from prior investigations. An earlier analysis of survey records from 2016 through 2020 demonstrated that daily cannabis users faced a 42 percent higher adjusted likelihood of stroke and a 25 percent higher likelihood of myocardial infarction (The American Journal of Managed Care). By contrast, the preliminary findings presented for November 2026 showed low-frequency use associated with 23 percent higher odds of overall cardiovascular disease and 40 percent higher odds of stroke, while heavy use was tied to 21 percent higher odds of cardiovascular disease and 25 percent higher odds of stroke (The American Journal of Managed Care).
Photo: Bioengineer.org
Independent clinicians emphasize that cross-sectional telephone surveys carry inherent methodological boundaries. Furthermore, many individuals who consume cannabis also smoke tobacco, a confounding variable that complicates efforts to isolate the specific physiological toll of cannabinoids on blood vessels (Heart).
Western Regional Hospital Discharge Trends and Legalization Impact
Parallel research published in BMJ Open examined more than 50 million hospital discharge records across thirteen Western states between 2012 and 2018 to evaluate population-level outcomes following recreational cannabis legalization (Aol). The difference-in-differences analysis found that hospital admission rates for atrial fibrillation, heart failure, and heart attacks accelerated faster in states with legal recreational sales compared to jurisdictions without similar laws Bioengineer.
Study authors noted that while baseline admission rates in the Western region were actually lower prior to recreational sales in 2012 and 2013, they climbed more rapidly after commercial markets opened Bioengineer. However, researchers cautioned that the hospital records study tracked policy changes rather than individual patient consumption habits, leaving open the question of whether the hospitalized individuals personally used cannabis (American Council on Science and Health).
Clinical Guidance and Broader Health Context
Medical professionals stress that as public consumption expands alongside broader commercial availability, healthcare providers need to include cannabis use in routine cardiovascular risk evaluations (Gizmodo).
Study links cannabis to increased risk of stroke
Overall, cannabis is beginning to emerge as a major contributor to premature heart disease in young and older adults, which can lead to serious cardiovascular events. To this end, clinicians should be addressing cannabis use with their patients as they would tobacco use when considering the risk of cardiovascular disease.
Photo: stupidDOPE
Robert L. Page II, chair of the writing group for the American Heart Association’s 2020 cannabis scientific statement, via The American Journal of Managed Care
Public health comparisons highlight the broader landscape of substance-related mortality. The Centers for Disease Control and Prevention estimates that excessive alcohol use accounts for approximately 178,000 deaths annually in the United States, while tobacco contributes to more than 480,000 deaths each year, contrasted against federal drug enforcement reports noting no recorded deaths from an overdose of marijuana. Investigators underscore that ongoing monitoring and peer-reviewed confirmation remain necessary to clarify the precise cardiovascular mechanisms involved (Aol).
Priya Deshmukh
Senior Editor, Health
Deshmukh is a practicing physician and renowned medical journalist, honored for her investigative reporting on public health. She is dedicated to delivering accurate, evidence-based coverage on health, wellness, and medical innovations.
