Keto lie #13--if somebody says they're keto, then they believe one through twelve.
"Eat fat to satiety"--for me the lie in this one is the universal "You." My usual initial advice is--eat low carb/keto to satiety. See if you lose weight. A lot of people do, at least at first. For me just this advice brought me from a little obese (by bmi) to a little overweight. For me that's down from around 190 to 170. Going further down the ketogenic rabbit hole brought me down another 15 pounds. I still feel a little pudgy sometimes--but last time I was at this weight for a prolonged time, I was in my early twenties, and I remember feeling a little pudgy then, too, so it's sort of par for the course.
So for me the lie isn't that eat fat to satiety can work, it's any guarantee that it
will work. Which is not far from my opinion on calories--if somebody just decided to eat a little less, and it works for them for a prolonged period, that's fine. They just don't get to tell me that what I'm doing works because I eat less, or am more active--with the implication that any way of eating less or being more active would work just as well. I don't get to tell people that a fat dominant keto diet will reduce their appetite and increase their energy levels--but I do get to tell them that it
might.
Becauses--a ketogenic diet works for me because I eat less and move more. Or--Because I eat a ketogenic diet, I eat less and move more. Or what I really think--Because I eat a diet that
happens to be ketogenic, I eat less and move more. I don't know why--but various hormonal and other signalling mechanisms for satiety respond somewhat differently to fat, protein, carbohydrate. It doesn't seem unlikely that one person's system might regulate bodyweight better--or at least at a lower body fat level--on a higher carb intake, and another's on a higher fat intake.