Adolescent e-cigarette, hookah, and conventional cigarette use and subsequent marijuana use

According to researchers at the University of Pennsylvania and the University of Southern California, e-cigarettes may promote graduation to marijuana use just as much combustible tobacco products do. They culled their data from responses to in-classroom surveys administered to ninth-graders in 10 Los Angeles public schools.

According to researchers at the University of Pennsylvania and the University of Southern California, e-cigarettes may promote graduation to marijuana use just as much combustible tobacco products do. They culled their data from responses to in-classroom surveys administered to ninth-graders in 10 Los Angeles public schools. The sample population included 2,668 adolescents who had never used marijuana at baseline. Among them, students who smoked e-cigarettes, hookahs, or traditional cigarettes at baseline were all more likely than students who did not to have become current users of both tobacco and marijuana when queried at 24-month followup.