The word “fat”—does it mean body fat or dietary fat? Or, as you will soon learn, fatty acid? Or, “do these pants make my butt look fat?” (Pro-tip: never answer this question.) Two-thirds of the US populace continue to believe and perpetuate the myth that “fat makes you fat.” While it’s true that dietary fat could become body fat, it does so only in response to insulin. And so weight isn’t driven by dietary fat, which doesn’t raise insulin, but rather by dietary refined carbohydrate and sugar, which do.

