Brains of chronic pot smokers are different, study says | Fox News: A new study out of the University of Texas' Center for BrainHealth and the Mind Research Network is showing brain differences in regular pot users—differences that have already been reported in lab mice.
The study, published in PNAS, found that 48 "chronic" users who smoked at least four times a week had less gray matter in the orbitofrontal cortex than 62 control subjects who didn't use pot, reports the Los Angeles Times.
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The orbitofrontal cortex "helps us determine what is good for us and what keeps us sustained," the lead author tells the Washington Post. It's unclear whether these "shrunken brains" are the result of chronic use or contribute to the tendency to use in the first place
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