黑料正能量 Note: The below article takes on some of the most contentious notions of the recovery movement. How much does the language of disease matter, and how does that differ between mental health and substance abuse?
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Is Addiction A Habit Or A Disease?
The Daily Beast; Zachary Siegel, 7/19/2015
A neuroscientist takes on the National Institute on Drug Abuse鈥檚 assertion that addiction is a brain disease鈥攁 classification he finds not only flawed but dangerous.
鈥淭he brain would be useless if it weren鈥檛 highly changeable,鈥 Dr. Marc Lewis, author of the听听The Biology of Desire: Why Addiction is Not a Disease, told me in an interview. A line that sounds so simple doesn鈥檛 seem to poke logical holes in the accepted notion that addiction is a 鈥.鈥
But this is precisely the essence of the on-going argument between dozens of esteemed scientists, who cannot seem to agree on what addiction is, and how it ought to be classified.
On the one hand, there鈥檚 the medical establishment鈥檚 view, led by Dr. Nora Volkow of the National Institute on Drug Abuse (NIDA). Volkow听s听that addiction is 鈥渁 brain disease because drugs change the brain鈥hese brain changes can be long lasting and can lead to many harmful, often self-destructive, behaviors.鈥
Neuroscientists like Dr. Marc Lewis see things differently. He writes in a section on neuroplasticity that, 鈥渘euroscientists who study addiction seem to have missed the point. They put people through a number of brain scans, and when they notice changes after someone has taken a lot of cocaine or drunk a lot of booze they say, 鈥楲ook! The brain has changed!鈥欌
This is an unremarkable observation, Lewis says. Since it is true of intensive learning in general, it does not amount to evidence of a diseased brain. So how can neuroscientists who look at the same brains in the same imaging studies come to fundamentally different interpretations?
鈥淭he point at which we call something a disease, where we draw this line in the sand, is arbitrary,鈥 Lewis said. 鈥淚t depends a whole lot on societal values and morals, rather than on any kind of logical, scientific or other rational criteria.鈥
What gives Lewis an edge are his impeccable, Oliver Sacks-like case studies sprinkled throughout the book, which demonstrate his understanding of and fascination with the experience of drug users. Where many neuroscientists see subjective experience as messy and immeasurable, Lewis looks to fill the sizeable gap between neuroscientific inquiry鈥攂lood, membranes, and molecules鈥攁nd one鈥檚 subjectivity.
鈥淭he most effective tools target cognitive and motivational processes such as self-determination, insight, willpower, and self-forgiveness. There is no disease that can be arrested by tapping such processes.鈥
And of course, Lewis affirms, like his neuro-contemporaries, that drug abuse does have major effects on the brain, especially in prefrontal areas used for judgment and decision-making, and in the dorsal striatum, a region implicated in learning habits. But those changes, he says, are not permanent and irreversible, as Volkow and NIDA suggest.
Lewis鈥 argument hinges on the concept of neuroplasticity, namely鈥 the concept that the brain adapts to new behaviors by forming new neural pathways. 鈥淭he idea that brain configurations are hardened and sealed is just ridiculous,鈥 says Lewis. 鈥淚t makes no sense in the current scientific environment.鈥
In an early section of the book Lewis writes that classifying addiction as an incurable brain disease may be harmful to addicts themselves. Dr. Volkow of NIDA argues the exact opposite, that labeling addiction as a disease removes the shame, stigma, and blame from the drug user.
When I pressed Lewis on this very issue, he said, 鈥淭he disease label often leads to a sense of fatalism: 鈥業鈥檝e got a disease, what can I do? I need to go get help and if I can鈥檛 get better it鈥檚 because I have a disease.鈥欌
In contrast, he went on to say, many who work with drug users see empowerment, self-discipline, and intense self-reflection as the only way to beat an addiction.
This is a controversial stance. Notions such as empowerment run contrary to Alcoholics Anonymous鈥 first step of听admitting powerlessness.听Some听听facilities in America operate within the 12-Step paradigm.
In his book, Lewis suggests a drastic rethinking of how we frame the entirety of addiction鈥攄own to revising the word 鈥渞ecovery,鈥澨one he believes to be 鈥渋ll-founded because of its medical connotations鈥 and the implications that may have on addicts. 鈥淲hy should we call it 鈥榬ecovery鈥 if it鈥檚 the beginning of something new?鈥 he says.
Lewis is careful to note, however, that his intention is not to denigrate the term for those who find meaning in it. Still, he contends that the term means little in scientific discourse, because people don鈥檛 go back to normal. He believes in people, and that a person keeps growing and changing, eventually becoming someone beyond the person she or he used to be before ever having used substances.
To ground this notion, he cites听听where grey matter volume returned to a healthy baseline level within six months to a year of abstinence in cocaine, heroin, and alcohol users.
鈥淗ere comes the first surprise,鈥 he writes, 鈥済rey matter volume in these regions continued to increase…It makes sense. Abstinence requires sustained and seasoned cognitive effort, and that effort grows synapses as surely as any other motivated activity.鈥 “The second surprise is that…the regions of increased growth don’t correspond exactly with the regions initially depleted.”
鈥淭he disease label often leads to a sense of fatalism: 鈥業鈥檝e got a disease, what can I do? I need to go get help and if I can鈥檛 get better it鈥檚 because I have a disease.鈥欌
He asks us to interpret this finding with caution, as future research is needed, but the results of this study 鈥渃ould mean that recovering addicts don鈥檛 just regain their lost self-control; they actually develop entirely novel strategies for self-control, based on newly acquired neural terrain.鈥 Hence, 鈥渞ecovery鈥 may be a misnomer.
It鈥檚 also asked of us to look at how addiction is currently treated. 鈥淭he most effective tools target cognitive and motivational processes such as self-determination, insight, willpower, and self-forgiveness. There is no disease that can be arrested by tapping such processes.鈥
Diseases are often treated by medical interventions, with pills, implants, and surgeries. Addiction is just not treated that way鈥 at least no such methods have proven to be successful yet. Until such approaches do work, addiction is still an all too human dilemma, and as Lewis says, it takes activities that are uniquely human to overcome it.
So if not a disease, then what is it? Lewis, simply put, says that it鈥檚 a habit鈥攐ne that鈥檚 incredibly powerful, destructive, potentially life wrecking, and extra difficult to break. But with the right help and determination, Lewis believes people can overcome such habits and come out on the other side a stronger human being.
The last thing the two of us discussed was how both of us did exactly that, just two former drug abusers, sitting down for a chat.
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