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The Boston Globe

Health & wellness

Does medical marijuana change how teens view the drug?

When Sion Kim Harris, a Harvard Medical School substance abuse researcher, visits high school classes to talk about marijuana and other drugs, she does not hang up a “Just Say No” banner or talk about how a drug charge can stain a student’s criminal record.

Harris instead talks about cannabinoid receptors and brain development, about how regular marijuana use may affect performance on a test now, or 10 years from now. As states loosen their laws around limited marijuana use, raising concerns that it could cause an increase in use by teenagers, recent studies have found that marijuana dependency among teens can change their brains for the long term.

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