Casual Marijuana Use Linked to Brain Changes

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Using marijuana a few times a week is enough to physically alter critical brain structures, according to a new study published Tuesday in The Journal of Neuroscience.

….The study found volume, shape and density changes in two crucial brain areas — the nucleus accumbens and the amygdala — involved with emotion and motivation and some types of mental illness. “This is a part of the brain you do not want to mess around with,” Breiter said.

by Karen Weintraub, USA Today

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