Teenagers are very familiar with the risks of smoking cigarettes, but are much less sure whether marijuana or e-cigarettes are harmful, according to a new study by researchers at the Stanford University School of Medicine.
While adolescents get clear messages from their families, teachers, peers and the media about the harms of smoking cigarettes, they receive conflicting or sparse information about the harms of marijuana and e-cigarettes, the study showed.
The findings will be published online June 23 in the Journal of Adolescent Health.