A team of researchers from Sweden and France have determined marijuana use alone does not increase stroke risk for adults under 60. The population-based study gave two detailed questionnaires, one regarding substance use and the other on social and behavioral factors, to 49,321 Swedish men who were born between 1949 and 1951 and then drafted into the military between ages 18 and 20. The researchers, lead by Daniel Falkstedt, PhD, then compared their findings with information from the national database about any stroke events that the participants experienced before age 60.
The study, which was published in the American Heart Association journal Stroke, concluded, “[B]y examining cannabis use in young adulthood in relation to subsequent risk of stroke in a large population-based cohort, we found no evident association between cannabis use and stroke, including stroke before 45 years of age... Tobacco smoking, however, showed a clear, dose-response shaped association with stroke.”
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