Chronic Pot Smoking May Alter Brain, Study Suggests

November 11, 2014 2:04 PM

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Chronic Pot Smoking May Alter Brain, Study Suggests

(HealthDay News) -- Long-term marijuana use appears to alter a person's brain, causing one region associated with addiction to shrink and forcing the rest of the brain to work overtime to compensate, a new study reports.

MRI scans revealed that people who use pot for years have a smaller-than-usual orbitofrontal cortex, a region in the frontal lobes of the brain that is involved in decision-making and assessing the expected rewards or punishments of an action, said study author Francesca Filbey, from the Center for ...

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