Pubdate: Fri, 05 Apr 2002 Source: Lake City Reporter (FL) Copyright: 2002sLake City Reporter Contact: http://www.lakecityreporter.com/ Details: http://www.mapinc.org/media/1712 Bookmark: http://www.mapinc.org/pot.htm (Cannabis) THAT IS WHY THEY CALL IT DOPE Before your 17-year-old waves Tuesday's paper in your face and says, "See, man: Marijuana doesn't make you stupid," prepare yourself by reviewing the evidence. Tuesday's report, of a study by Peter Fried, a psychology professor at Carleton University in Ottawa, actually found considerable harm done to intelligence levels among heavy marijuana users. The key is that the harm exists only during the period that they are using marijuana regularly, and not over the long term. Provided they stop, according to an editorial in the Toronto Globe and Mail. By smoking five or more joints a week, users are lopping four points off their IQ ( which is roughly the effect felt by children whose mothers smoked crack cocaine when they were pregnant, or consumed three alcoholic drinks a day. As long as they habitually smoke weed, they have every bit as good a jump on life as a former crack baby, or someone growing up with fetal alcohol syndrome. Like the rest of this luckless fraternity, they're now at much higher risk of dropping out of school or being fired from their job. And they may discover the brutal joys of addiction ( scientists now believe that today's highly potent marijuana (roughly five times as strong as that sold on the street 30 years ago) can be psychologically and physically habit-forming. Why did any of the heavy users in Dr. Fried's study quit? They told him that their short-term memory and attention span were suffering. Whether that effect lasts, Dr. Fried doesn't know. As he stressed in his report, he didn't measure these other crucial elements of cognition. Noteworthy, too, is that Dr. Fried's sample of heavy users was small, with only nine people. Keep in mind that lab tests on rats have found lasting brain damage in about 5 percent of those heavily dosed with marijuana. Regular teen-age users, whose numbers have been growing sharply in the past few years, should know that they are dumbing themselves down, in more ways than one. - --- MAP posted-by: Terry Liittschwager