Pubdate: Tue, 31 Jul 2007 Source: Guardian, The (UK) Copyright: 2007 Guardian Newspapers Limited Contact: http://www.guardian.co.uk/guardian/ Details: http://www.mapinc.org/media/175 Referenced: http://www.mapinc.org/drugnews/v07/n906/a02.html Author: Nigel Longhurst HONESTY NEEDED IN CANNABIS DEBATE Ben Goldacre's level-headed reanalysis of the "cannabis psychosis" stats (Bad Science, July 28) came as a welcome relief following last week's tabloid hysteria. But he could have gone further: isn't it possible - likely even - that people experiencing embryonic, undiagnosed psychotic symptoms might turn to cannabis for therapeutic reasons, especially where normal social interactions have become problematic? That population levels of schizophrenia have remained constant in the UK over the last 30 years would appear to support this possibility. As ever, in the social (and all) sciences, one cannot infer causation from correlation. Nigel Longhurst Liverpool - --- MAP posted-by: Jay Bergstrom