علوم: خطر تعاطي المخدرات عند الشباب

August 28, 2012 — Persistent teenage marijuana users risk seeing their IQs as adults drop, according to a 25-year study of 1,037 children. A possible cause is that adolescents are vulnerable to marijuana’s effects on brain chemistry. Graphic shows how prefrontal cortex and hippocampus could be affected by chronic cannabis use in teenage drug users.

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