Young adults who frequently use marijuana twice as likely to
A history of myocardial infarction was more frequently reported among young adults who recently used cannabis compared with those who did not use the substance, a cross-sectional study showed.

Cannabis use is increasing among young adults, but its effects on cardiovascular health are poorly understood. We aimed to assess the association between recent cannabis use and history of myocardial infarction (MI) in young adults (aged 18–44 yr).

Researchers performed a cross-sectional study using pooled data from the 2017 and 2018 cohorts of the American Behavioral Risk Factor Surveillance System survey of US adults. We analyzed the association between any recent cannabis use and history of MI using a weighted logistic regression model that adjusted for demographic factors, socioeconomic factors, health-related behaviours, concomitant substance use and other comorbidities. We also assessed this association after stratifying by frequency of use and by primary method of consumption.

-- Among 33 173 young adults (18.5 million weighted), 4610 respondents (3.2 million weighted) reported recent cannabis use.

-- A history of MI was more frequent among recent cannabis users (n = 61 of 4610, 1.3%) relative to nonusers.

-- A history of MI was associated with cannabis use of more than 4 times per month, and with smoking as a primary method of consumption.

This study provides evidence supporting an association between recent cannabis use and history of MI in young adults. Increasing cannabis use in an at-risk population could have negative implications for cardiovascular health.

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