Cannabis. Marijuana. Cannabis. Weed. Marijuana/Drug Legalization. Ganja. Cannabis. Kaneh Bosm || Cannabis Prohibition Reform. Cannabis Extract Cures. Pot Smokers Might Not Turn Into Dopes After All. 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. What other factors might cause the decline in IQ?
Ole Røgeberg, a labor economist at the Ragnar Frisch Centre for Economic Research in Oslo and the author of the latest paper, ran simulations which showed that confounding factors associated with socioeconomic status could explain the earlier result. Is this a case of correlation versus causation? Past research on the Dunedin cohort shows that individuals from backgrounds with low socioeconomic status are more likely than others to begin smoking cannabis during adolescence, and are more likely to progress from use to dependence. So who is right? Smoking marijuana does not harm lungs: study says. WHEN WE GROW, This is what we can do (Full Documentary) Clearing the Smoke: The Science of Cannabis. Dr. Coldwell Says Hemp Cures Cancer. Marijuana a Chronic History (Full Version)
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