Study Examines Cannabis Use and Heart Attack Risk in Young Adults

Background on Cannabis Legislation and Usage

A recent study explores the potential link between cannabis use and heart attacks among young adults. As cannabis becomes legal for both recreational and medical purposes in various regions, its consumption is increasingly common. A 2019 Gallup poll indicated that 12 percent of U.S. adults reported using cannabis, with young adults aged 18 to 29 being the most prevalent users.

Potential Health Benefits and Concerns

Cannabis has been suggested to alleviate symptoms for several conditions, including nausea, chronic pain, and multiple sclerosis. However, the long-term implications of cannabis on health remain unclear. Some studies indicate that cannabis may activate the endocannabinoid system, influencing cardiovascular function by raising blood pressure and heart rate. Prior case studies have noted a connection between heavy cannabis use and heart attacks. Nonetheless, the specific relationship between recent cannabis consumption and heart attacks in otherwise healthy young adults has not been thoroughly investigated.

Research Methodology

To address this gap, researchers conducted a study published in CMAJ, involving data from 33,173 American adults aged 18 to 44. Participants were queried about recent cannabis use and any history of heart attacks. Recent use was defined as having consumed cannabis at least once in the last 30 days. Among the surveyed individuals, 4,610 reported recent cannabis use, with most using it more than four times during the month.

Findings on Cannabis Use and Heart Attack History

The study revealed that cannabis consumption rates were notably higher among certain demographics, including males, unmarried individuals, and those who frequently consume alcohol or tobacco products. Of the cannabis users, 1.3% reported a history of heart attacks, in contrast to 0.8% of non-users. The study noted, “The magnitude of this association increased among more frequent users of cannabis.”

Implications and Future Research

These findings imply that recent cannabis use may be linked to an elevated risk of heart attacks; however, further research is necessary to clarify this relationship. It is noteworthy that 76.3% of cannabis users in the study consumed it via smoking, which can adversely affect lung health and, in turn, the cardiovascular system. Additionally, the study did not collect detailed medical histories regarding participants’ heart attacks, such as type, severity, or the timing in relation to cannabis use, which may be critical for comprehensive understanding. Continued research is essential to address these limitations.

References

Hrynowski, Z. (2019). What percentage of Americans Smoke Marijuana? The Gallup. Accessed 2021, September 10, from https://news.gallup.com/poll/284135/percentage-americans-smoke-marijuana.aspx

National Academies of Sciences, Engineering, and Medicine; Health and Medicine Division; Board on Population Health and Public Health Practice; Committee on the Health Effects of Marijuana: An Evidence Review and Research Agenda. (2017, January). The Health Effects of Cannabis and Cannabinoids: The Current State of Evidence and Recommendations for Research. Washington (DC): National Academies Press. Accessed online from https://www.ncbi.nlm.nih.gov/books/NBK425767/

Latif, Z., Garg, N. (2020). The impact of marijuana on the cardiovascular system: a review of the most common cardiovascular events associated with marijuana use. J Clin Med 9(6): 1925. Doi: 10.3390/jcm9061925

Ladha, K.S., Mistry, N., Wijeysundera, D.N., et al (2021, September 7). Recent cannabis use and myocardial infarction in young adults: a cross-sectional study. CMAJ 193(35): E1377-E1384. Doi: 10.1503/cmaj.202392