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Addiction

16 November 2010

Teen marijuana use harms brain

People who started smoking marijuana at a young age did much worse on tests of executive brain function than those who started smoking when they were older, a new study shows.

People who started smoking marijuana at a young age did much worse on tests of executive brain function than those who started smoking when they were older, a new study shows.

The study of 33 chronic marijuana smokers and 26 nonsmokers found that, overall, habitual marijuana users appeared less able to maintain focus and were more likely to make errors.

 

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