Heavy Marijuana Users Have Abnormal Brain Structure, Poor Memory
Posted Dec 19 2013 4:07pm
Teens who were heavy marijuana users smoking it daily for about three years had abnormal changes in their brain structures related to working memory and performed poorly on memory tasks, reports a new Northwestern Medicine study.
A poor working memory predicts poor academic performance and everyday functioning. The younger the individuals were when they started chronically using marijuana, the more abnormally their brain regions were shaped, the study reports. The findings suggest that these regions related to memory may be more susceptible to the effects of the drug if abuse starts at an earlier age.