Robert Lustig argues both the calorie model and carbohydrate-insulin model fail to explain obesity. He points to prenatal effects, accelerating infant weight gain, and falling body temperature as evidence neither theory accounts for what's actually happening.
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There are two popular models of obesity today. One is the energy balance model, the calorie model, and one is the carbohydrate insulin model. That refined carbohydrate and sugar drive insulin, which causes adipose tissue deposition. Okay. And, of course, these two models have been fighting it out now for the past ten years or so. I subscribed to the carbohydrate insulin model myself for a long time, and I still do to some extent. But, in fact, there's actually some problems with that model, like, for instance, the epigenetics, like, what happens prenatally to cause that 200 grams. Where's that coming from? Okay. And why is it that babies are gaining weight even faster? And why is it that everybody's metabolism is going, you know, going down because of the body temperature going down? Those are not explained by the carbohydrate insulin model.