Study: Regular Pot Smokers Have Shrunken Brains

Marijuana SmokingExperimental mice have been telling us this for years, but pot-smoking humans didn’t want to believe it could happen to them: Compared with a person who never smoked marijuana, someone who uses marijuana regularly has, on average, less gray matter in his orbital frontal cortex, a region that is a key node in the brain’s reward, motivation, decision-making and addictive behaviors network.

More ambiguously, in regular pot smokers, that region is better connected than it is in non-users: the flow of signal traffic is speedier to other parts of that motivation and decision-making network, including across the superhighway of “white matter” that connects the brain’s hemispheres.

The researchers who conducted the study speculate that the orbital frontal cortex’s greater level of “connectedness”–which is especially pronounced in people who started smoking pot early in life–may be the brain’s way of compensating for the region’s under-performing gray matter. Whether these “complex neuroadaptive processes” reverse themselves when marijuana use stops is an important unanswered question, they added.

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  • Russ

    I think it would be wise to do a little more research on the wonders of cannabis…I’m a fifty year old male, I’ve been using cannabis for quite a few years…I’m not some waste case, I am a productive person who can hold a conversation and not have that glazed over look. If I do recall..God gave us every seed bearing plant…

    now here is something for everyone to think about…how many of us Christians get up in the morning and have a cup of coffee to get us going…? Well that my fellow Christians is a stimulant and just because it is legal in man law does not mean it is good for you (try quitting coffee for a few days and tell me what happens, I guarantee you will go through with drawls ….so before you make a judgement on us cannabis users….please take heed to what Jesus’ says…do not judge other or you will judged in the same manner.