Marijuana and Heroin: A Study of Initiation of Drug Use by Heroin Addicts



Many studies have explored the question of whether or not marijuana use leads to heroin use. An unstated assumption in most of these studies seems to be the presupposition that marijuana use was the drug user's initiation into use of drugs. In two samples of ex-heroin addicts it was found that a majority of the subjects had not begun their drug use with marijuana.