" What’s been clear for almost forty years is that the levels of circulating insulin in animals and humans will be proportional to body fat. “The leaner an individual, the lower his basal insulin, and vice versa,” as Stephen Woods, now director of the Obesity Research Center at the University of Cincinnati, and his colleague Dan Porte observed in 1976. “This relationship has also been shown to occur in every commonly used model of altered body weight, including…genetically obese rodents and overfed humans. In fact, the relationship is sufficiently robust that it exists in the presence of widespread metabolic disorder, such as diabetes mellitus, i.e., obese diabetics have elevated basal insulin levels in proportion to their body weight. "

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