A study by Washington University (of St. Louis, MO), published in the Journal of the American Medical Association, of 311 Australian twin pairs, concludes that teenage pot users are five times more likely to use or abuse cocaine, heroin, hallucinogens, sedatives, or alcohol. The study was undertaken to prove the opposite. Sorry, NORML. Keep trying to spin the positive aspects of marijuana. I'm sure Woody Harrelson needs something to do with all of his copious spare time.