New research suggests that regular usage of marijuana during teen years has long term effects on the human brain.
A study presented at the Society for Neuroscience meeting, in San Diego last week, shows people who start using marijuana at a young age have more cognitive shortfalls. Also, the more marijuana a person used in adolescence, the more trouble they had with focus and attention years later.
"Early onset smokers have a different pattern of brain activity, plus got far fewer correct answers in a row and made way more errors on certain cognitive tests," says study author Staci Gruber, assistant professor of psychiatry at Harvard Medical School.
Teen brains are only about 80% developed and don't fully mature until their mid-20s, the researchers say. Read the full article.