I find it sadly amusing that we still strive to reduce the obesity/diabetes problem down to one cause. As if reality and the world were binary: either/or. Instead of a very complex and dynamic network of factors involved with obesity and associated diseases. Until a human being is viewed holistically as a dynamic organism that responds to its intrinsic and extrinsic environment, and that the process to a state of obesity and diabetes is multifactorial, we will continue to blunder along as if blindfolded.
Treat obesity as physiology, not physics : Nature News & Comment