The studies show that addiction alters the interactions between midbrain regions like the ventral tegmentum and the nucleus accumbens, which are involved with motivation and pleasure, and parts of the prefrontal cortex that mediate decisions and help set priorities. Acting in concert, these networks determine what we value in order to ensure that we attain critical biological goals: namely, survival and reproduction.
In essence, addiction occurs when the....
... Once we understand that addiction is neither a sin nor a progressive disease, just different brain wiring, we can stop persisting in policies that don't work, and start teaching recovery...."
http://mobile.nytimes.com/2016/06/26/opinion/sunday/can-you-get-over-an-addiction.html?_r=0&referer=
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