" excess weight and obesity, like all diseases of civilization, are caused by the singular hormonal effects of a diet rich in refined and easily digestible carbohydrates. The fattening of our adult years, after all, is not just associated with chronic diseases of civilization, it is a disease of civilization, and so it, too, may be a symptom of an underlying disorder. In this hypothesis, it is the quality of the calories consumed that regulates weight, and the quantity—more calories consumed than expended—is a secondary phenomenon. "

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