Over time, though, the brain of a heavy drinker adjusts to the steady flow of alcohol by producing less GABA
and more glutamate, resulting in anxiety and irritability. Dopamine
production also slows, and the person gets less pleasure out of everyday
things. Combined, these changes gradually bring about a crucial shift:
instead of drinking to feel good, the person ends up drinking to avoid
feeling bad. Alcohol also damages the prefrontal cortex, which is
responsible for judging risks and regulating behavior—one reason some
people keep drinking even as they realize that the habit is destroying
their lives. The good news is that the damage can be undone if they’re
able to get their consumption under control.
Studies of twins and adopted children suggest that about half of a person’s vulnerability to alcohol-use disorder is hereditary, and that anxiety, depression, and environment—all considered “outside issues” by many in Alcoholics Anonymous and the rehab industry—also play a role. Still, science can’t yet fully explain why some heavy drinkers become physiologically dependent on alcohol and others don’t, or why some recover while others founder. We don’t know how much drinking it takes to cause major changes in the brain, or whether the brains of alcohol-dependent people are in some ways different from “normal” brains to begin with. What we do know, McLellan says, is that “the brains of the alcohol-addicted aren’t like those of the non-alcohol-dependent.”
Bill Wilson, AA’s founding father, was right when he insisted, 80 years ago, that alcohol dependence is an illness, not a moral failing. Why, then, do we so rarely treat it medically? It’s a question I’ve heard many times from researchers and clinicians. “Alcohol- and substance-use disorders are the realm of medicine,” McLellan says. “This is not the realm of priests.”
- More Here
Studies of twins and adopted children suggest that about half of a person’s vulnerability to alcohol-use disorder is hereditary, and that anxiety, depression, and environment—all considered “outside issues” by many in Alcoholics Anonymous and the rehab industry—also play a role. Still, science can’t yet fully explain why some heavy drinkers become physiologically dependent on alcohol and others don’t, or why some recover while others founder. We don’t know how much drinking it takes to cause major changes in the brain, or whether the brains of alcohol-dependent people are in some ways different from “normal” brains to begin with. What we do know, McLellan says, is that “the brains of the alcohol-addicted aren’t like those of the non-alcohol-dependent.”
Bill Wilson, AA’s founding father, was right when he insisted, 80 years ago, that alcohol dependence is an illness, not a moral failing. Why, then, do we so rarely treat it medically? It’s a question I’ve heard many times from researchers and clinicians. “Alcohol- and substance-use disorders are the realm of medicine,” McLellan says. “This is not the realm of priests.”
- More Here
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