“There it is. Pchow! Not only now do I have a card which makes me have the ability to buy cannabis in the State of California, But because I have this form, which I was even more shocked by, now I have the ability to grow marijuana in the State of California. In San Francisco I could grow up to 24 plants in my backyard if I so wanted to.”
-- Morgan Spurlock
Watch as CNN's Dr. Sanjay asks what doctors really mean by "medical marijuana."
Watch as CNN's Dr. Sanjay Gupta talks with CNN's Piers Morgan about marijuana and its comparison to other drugs.