Drug use or abuse can cause harmful short-term or long-term health risks. However, drug abuse can have long-term effects on the developing brains of teenagers. Brain, MRI scans show that people who have been using drugs for a long time develop a smaller prefrontal cortex than people who have not been using drugs. The prefrontal cortex is the area for decision-making occurs. Drug use can result in poor performance, memory loss and social problems.
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