Pot smokers might not turn into dopes after all
Revisiting data casts doubts on link between heavy cannabis use and declining IQ
Nature
Monday, January 14, 2013
Monday, January 14, 2013
Cannabis rots your brain — or does it? Last year, a paper published in Proceedings of the National Academy of Sciences (PNAS) suggested that people who used cannabis heavily as teenagers saw their IQs fall by middle age. But a study published today — also in PNAS — says that factors unrelated to cannabis use are to blame for the effect. Nature explores the competing claims. (See also: New Research Questions Marijuana’s Impact in Lowering IQ)
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