This document summarizes a study on the impact of media on substance abuse among adolescents. The study analyzed longitudinal studies assessing the relationship between media exposure and youth substance abuse. The studies found that alcohol advertising increases the likelihood that adolescent drinkers will drink more and non-drinkers will start drinking. The results suggest that school-based programs should educate adolescents on the dangers of substance abuse and that subsequent studies are needed to evaluate the effectiveness of these programs.