Teen cannabis users have poor long-term memory in adulthood

Teens who were heavy marijuana users -- smoking it daily for about three years -- had an abnormally shaped hippocampus and performed poorly on long-term memory tasks, reports a new study. The hippocampus is important to long-term memory, which is the ability to remember life events. The brain abnormalities and memory problems were observed during the individuals' early twenties, two years after they stopped smoking marijuana. ...read more