" 1983, Jules Hirsch of Rockefeller University framed this enigma in the form of two alternative hypotheses. One was the common belief “that obesity is the result of a willful descent into self-gratification.” The other was the “alternative hypothesis that there is something ‘biologic’ about obesity, some alteration of hormones, enzymes or other biochemical control systems which leads to obesity.” Because no such biologic abnormality had been unambiguously identified, Hirsch believed, “it is perhaps better to maintain the illusion that obesity is not an illness. It is more pleasant to believe that it is no more than an error of good judgment and that better judgments and choices will eventually lead” to a better outcome. "

― Gary Taubes , Good Calories, Bad Calories: Challenging the Conventional Wisdom on Diet, Weight Control, and Disease