Cannabis Use Steals 8 IQ Points from the Teenage Mind
Scientists have found that regular use of cannabis during adolescence reduces IQ by an average of 8 points. Even more strikingly, this loss cannot be undone by kicking the habit later in life. The guinea pigs in the experiment were born in 1972/73 and were quizzed about their cannabis usage at the ages of 18, 21, 26, 32 and 38. Professor Terrie Moffitt said “persistent users, who started as teenagers, suffered a drop of eight…