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Submission + - Teen Marijuana Use Linked To IQ Loss

An anonymous reader writes: Frequent marijuana use before the age of 18 may cause irreversible harm to a person's intelligence, attention and memory, scientists claim. Middle-aged people who had started using marijuana in their teens showed an average decline in IQ by about 8 points and quitting pot did not appear to reverse the loss either, according to researchers at Duke University.
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Teen Marijuana Use Linked To IQ Loss

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