Marijuana Linked to Elevated Heart Attack Risk in Young Adults
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Association is stronger when marijuana use is frequent.
As the decriminalization of marijuana becomes more widespread, its use is on the rise among young adults. Yet, the effects on overall health have not been well studied, including how marijuana use affects cardiovascular health.
Now a large-scale study in the Canadian Medical Association Journal has found an association between recent marijuana use and increased risk of myocardial infarction (MI) in young people, ages 18 to 44 years. The association was strongest among those who used marijuana at least four times a month, primarily by smoking it. Users who vaped or ingested marijuana through baked goods or other edibles also had a higher incidence of MI compared with nonusers, but only those who smoked frequently showed elevated risk that was statistically significant.
The study was based on 2017 and 2018 behavioral risk survey data from the Centers for Disease Control and Prevention. It sought to evaluate known evidence of cardiovascular effects of marijuana in the context of MI risk for individual users. Marijuana’s chemical components can increase myocardial oxygen demand while simultaneously reducing blood flow to the myocardium. This cannabis-induced oxygen supply and demand mismatch, in the setting of […]