Article content Researchers from Switzerland and the U.S. write in the recent study that marijuana’s long-term effects on cardiovascular health are understudied. As such, they looked at data from the CARDIA (Coronary Artery Risk Development in Young Adults) Study, a cohort of 5,115 Black and white women and men at Year 20 visit. Specifically, they considered hardening of the arteries at mid-life and lifetime exposure to marijuana and tobacco smoking. “This study adds to the growing body of evidence that there might be no association between the average population level of marijuana use and subclinical atherosclerosis.” / Photo by Vadzim Kushniarou/Getty Images