Dear teacher.

• Author: Volkow, Nora D.
• Position: HEADS UP: REAL NEWS ABOUT DRUGS AND YOUR BODY

This year's Heads Up articles highlight myths versus facts about marijuana.

This third and final article in the series focuses on the myth of "medical marijuana," a topic that is drawing debate across the country. Because marijuana has been legalized for medicinal use in more than a dozen states and the District of Columbia, students may think that it is indeed medicine and poses few health risks.

This article helps students understand why marijuana is not medicine by focusing on...