Marijuana is the most widely used illicit drug in the United States. Since gaining popularity in the mid-1960s, it has been clouded in controversy. Unlike some other harmful illegal substances, marijuana can be prescribed by doctors and used medicinally in some parts of the country. Because of both its damaging and healing effects, marijuana"s illegality is constantly debated. "Marijuana" traces the full history of this controversial drug and explains both the positive and negative effects it can have on the body and mind.