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Study: Cerebral cortex thinning in teens who used cannabis

Using cannabis during adolescence may be linked to neurodevelopment changes via thinning of the cerebral cortex, suggests a new study.

Published this week in JAMA Psychiatry, investigators were curious to see if consuming weed during adolescence had any effect on cortical thickness development.

To find out, they examined 1,598 magnetic resonance images from 799 people involved in a cohort study done across eight European sites. Self-reported as “cannabis naïve” at baseline, participants underwent a five-year follow-up.

What researchers found was that “results suggest cannabis use during middle to late adolescence may be associated with altered cerebral cortical development, particularly in regions rich in cannabinoid 1 receptors,” the study abstract notes.

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