Does Teenage Marijuana Use Affect IQ?

A much-publicized report on a long-term study of the effects of marijuana use drew a frightening conclusion: that adolescent users could actually be shaving points off their IQs. The study was of 1,000 kids in New Zealand who had IQ tests in early adolescence and again when they were 38 years old. In between they … Continue reading Does Teenage Marijuana Use Affect IQ?