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Tobacco News

New Study Scanned Brains of 92 Subjects, 16 to 20, For 18 Months

A teen who uses alcohol is likely to have reduced brain tissue — but a teen who uses marijuana is not, according to a new study.
Scientists looked at the brains of 92 adolescents, ages 16 to 20, before and after an 18-month period, reports Kathleen Miles at the Huffington Post. Half of the teens — who already had histories of alcohol and marijuana use — continued to use both in varying amounts during that year and a half. The other half of the teens abstained or consumed very minimally, as they had during adolescence.