Teens' Heavy Pot Smoking Tied to Memory Problems

March 12, 2015 1:00 PM

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THURSDAY, March 12, 2015 (HealthDay News) -- Teenagers who smoke marijuana daily may have lingering memory problems and structural abnormalities in the brain, even after they stop using the drug, a small study suggests.

Researchers found that young adults who'd smoked pot heavily as teens performed worse on memory tests than their peers who'd never used the drug regularly. And on brain scans, they tended to show differences in the shape of the hippocampus -- a brain structure involved in forming long-term memories.

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