ADDICTION

Sigrid Rausing, Mayhem: A Memoir (New York: Knopf, 2017):

You can argue the causes of addiction and the efficacy of treatment models every which way. I believe that addiction is a spectrum condition--and that we are all on the spectrum. The neurological model, based on the binary distinction between neurotypical and addictive brains, one or the other, doesn't seem to me to recognize that. The genetic model of course is less binary, since the view now is that so many genes are involved, one way or another. Each one plays a part. And I imagine it's likely that some mutations give protection against addiction, rather than the other way around.

Id. at 77.