American Heart Association statement: cannabis has cardiovascular risks that outweigh uncertain benefits
The American Heart Association issued its first scientific statement on cannabis and cardiovascular health, concluding that potential cardiovascular harms outweigh uncertain therapeutic benefits.
Quick Facts
What This Study Found
The AHA scientific statement reviewed evidence that cannabis use is associated with cardiovascular risks including tachycardia, arrhythmias, myocardial infarction, stroke, and heart failure, many mediated by delivery mechanism (especially smoking). Few cardiovascular therapeutic benefits were identified. The statement called for reclassification of cannabis from Schedule 1 to enable more research.
Key Numbers
Published in Circulation (impact factor ~29); covers 25+ years of expanding legalization; calls for reclassification from Schedule 1 to facilitate research.
How They Did This
AHA Scientific Statement (expert consensus review) critically reviewing clinical, epidemiological, and policy literature on cannabis and cardiovascular health from medical and public health perspectives.
Why This Research Matters
This is the first formal position statement on cannabis from the nation most influential cardiovascular organization. It sets the tone for how cardiologists should counsel patients and how research priorities should be directed.
The Bigger Picture
With cannabis use increasing rapidly, especially among young people, the AHA is signaling that cardiovascular medicine can no longer ignore cannabis. The call for reclassification reflects the tension between the need for evidence and the legal barriers to obtaining it.
What This Study Doesn't Tell Us
Scientific statement format (expert consensus, not systematic review); much of the underlying evidence is observational; cardiovascular effects of different cannabis products and delivery methods are not well differentiated.
Questions This Raises
- ?Would non-smoked cannabis products carry fewer cardiovascular risks?
- ?Should patients with cardiovascular disease be formally counseled against cannabis use?
Trust & Context
- Key Stat:
- First AHA scientific statement on cannabis: cardiovascular risks outweigh benefits
- Evidence Grade:
- Strong: AHA scientific statement published in Circulation, representing expert consensus from a leading cardiovascular organization.
- Study Age:
- Published 2020.
- Original Title:
- Medical Marijuana, Recreational Cannabis, and Cardiovascular Health: A Scientific Statement From the American Heart Association.
- Published In:
- Circulation, 142(10), e131-e152 (2020)
- Authors:
- Page, Robert L(2), Allen, Larry A(2), Kloner, Robert A(2), Carriker, Colin R, Martel, Catherine, Morris, Alanna A, Piano, Mariann R, Rana, Jamal S, Saucedo, Jorge F
- Database ID:
- RTHC-02762
Evidence Hierarchy
Summarizes existing research on a topic.
What do these levels mean? →Frequently Asked Questions
What does the American Heart Association say about cannabis?
Their first-ever scientific statement concluded that cannabis cardiovascular risks (including arrhythmia, heart attack, and stroke) outweigh the uncertain therapeutic benefits, and called for reclassification to enable better research.
Is cannabis bad for the heart?
According to the AHA, cannabis use is associated with several cardiovascular risks, many related to smoking as the delivery method. The full risk profile of non-smoked cannabis products is less clear.
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Cite This Study
https://rethinkthc.com/research/RTHC-02762APA
Page, Robert L; Allen, Larry A; Kloner, Robert A; Carriker, Colin R; Martel, Catherine; Morris, Alanna A; Piano, Mariann R; Rana, Jamal S; Saucedo, Jorge F. (2020). Medical Marijuana, Recreational Cannabis, and Cardiovascular Health: A Scientific Statement From the American Heart Association.. Circulation, 142(10), e131-e152. https://doi.org/10.1161/CIR.0000000000000883
MLA
Page, Robert L, et al. "Medical Marijuana, Recreational Cannabis, and Cardiovascular Health: A Scientific Statement From the American Heart Association.." Circulation, 2020. https://doi.org/10.1161/CIR.0000000000000883
RethinkTHC
RethinkTHC Research Database. "Medical Marijuana, Recreational Cannabis, and Cardiovascular..." RTHC-02762. Retrieved from https://rethinkthc.com/research/page-2020-medical-marijuana-recreational-cannabis
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.