Yeah but think about the data they had. They didn't have massive fast food and snack food industries that were primarily carb based, and so people who overate

Yeah but think about the data they had. They didn't have massive fast food and snack food industries that were primarily carb based, and so people who overate overate fats much more frequently than they do now. The certainty you dislike is the same certainty I react against with the low carb movement. We are only certain of two things: 1) Having less fat on your body is healthier (to an extent) and will help prevent things like heart disease, diabetes etc. 2) If you have too much fat lowering caloric consumption will make you burn it. Anything else is speculation. > Seriously - how difficult would it have been to do a couple-hundred person trial for a year or so to get some confirmation? And yet, billions of dollars (10s of billions?) of policy and dietary guidance were based on this poorly supported theory. Really difficult, actually. And doing it without pissing off a major industry is impossible.