Cannabis Harms Brain, Imaging Shows

June 8, 2015

BALTIMORE — The heavy, long-term use of cannabis is associated with negative changes in parts of the brain not previously implicated, and is linked to deficits in learning and memory, new research suggests.

"In light of a current trend toward legalizing marijuana, with potentially increased exposure of adolescents, we believe our findings are important to consider," said investigator Jodi Weinstein, MD, from the Columbia University Medical Center and the New York State Psychiatric Institute in New York City.

... The study results were presented here at the Society of Nuclear Medicine and Molecular Imaging 2015 Annual Meeting.

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