Recent cannabis has been found to be associated with a history of myocardial infarction (MI) among younger adults by researchers in a study just published online in CMAJ, the journal of the Canadian Medical Association.

Karim S. Ladha, M.D., from St. Michael’s Hospital in Toronto, and colleagues performed a cross-sectional study using pooled data from the 2017 and 2018 cohorts of the American Behavioural Risk Factor Surveillance System survey of adults to examine the association between recent cannabis use and MI.

The association was also assessed after stratification by frequency of use and primary method of consumption.

The researchers found that 4,610 of 33,173 young adults (aged 18 to 44 years) reported recent cannabis use (17.5 percent). Compared with nonusers, recent cannabis users more often had a history of MI (1.3 versus 0.8 percent; adjusted odds ratio, 2.07).

There were associations for a history of MI with cannabis use of more than four times per month and with smoking as the primary method of consumption (adjusted odds ratios, 2.31 and 2.01, respectively).

“With recent legalization and decriminalization, cannabis use is increasing in young adults in North America, and we do not fully know its effects on cardiovascular health,” Ladha said in a statement.

“We found an association between recent cannabis use and myocardial infarction, which persisted across an array of robust sensitivity analyses.”


REFERENCE: Ladha et al: Recent cannabis use and myocardial infarction in young adults: a cross-sectional study;