Long-Term Marijuana Use Linked To Abnormalities In Key Brain Region

November 11, 2014 2:03 PM

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Pot smokers say marijuana is a mind-expanding drug, but a new study conducted at The University of Texas at Dallas links heavy, long-term use of marijuana with smaller volume in the orbitofrontal cortex--a brain region associated with decision-making and addiction.

The same research shows that the brains of long-term users have greater connectivity in this region than do the brains of people who don't use pot, although this connectivity seems to disappear over time with prolonged use. The research also shows that the earlier an individual starts using marijuan...

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