No brain destruction: Marijuana does not "destroy the brain." there is no evidence of significant harm to brain structure or function in long-term users & it may even prevent and reverse brain aging & alzheimer's! however, there is evidence that marijuana may adversely affect brain development/intelligence in those who use it regularly before age 18. Thus, i advise adolescents against using it. See comments for links.
Answered 10/24/2017
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Causes brain changes: Cannabis causes changes in the brain that make it resemble the brain of someone with schizophrenia.
Answered 12/9/2012
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