Summary: <p>A new report from the National Institute On Drug Abuse indicates that marijuana use among teenagers has risen slightly and an increasing number do not believe regular marijuana use is harmful. On the other hand, high school students are drinking less alcohol, and are less likely to be abusing prescription painkillers. Cigarette smoking is down, as well. Join Diane for an update with Nora Volkow, director of the National Institute On Drug Abuse on the trends in drug use among teens, the latest scientific research on addiction and what changes to medical marijuana laws in some states may mean for overall use of marijuana.</p>
