View full lesson: http://ed.ted.com/lessons/how-do-drugs-affect-the-brain-sara-garofalo

Most people will take a pill, receive an injection, or otherwise take some kind of medicine during their lives. But most of us don’t know anything about how these substances actually work. How can various compounds impact the way we physically feel, think, and even behave? Sara Garofalo explains how some drugs can alter the communication between cells in the brain.

Lesson by Sara Garofalo, directed by Adriatic Animation.