Our study findings suggest that the debate over the role of medical marijuana laws in adolescent marijuana use should cease, and that resources should be applied to identifying the factors that do affect risk,” the researchers wrote.
Northwestern University researchers found that former teen potheads—more technically, those who lit up daily for roughly three years—had a hippocampus whose shape wasn't normal. The hippocampus plays a key role in long-term memory, and the study participants performed 18% worse on tests related to long-term memory as compared to their pot-free peers.
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