Most of the time people don't really expect to go back to the way they used to eat and still keep the weight off, although often they seem to think that after being on a diet for XX weeks/months, they'll never go back to overeating again. That doesn't work of course, but they realize they're going to regain when they give in and go back to eating non-diet foods.



In general though, LC/keto is really the ONLY diet that's held to that kind of standard - that you should somehow be able to go back to eating what you used to eat, and still keep the weight off. It makes no sense, but that's the nay-sayers final dig at LC/keto, pointing out that since it's such an unsustainable diet, you'll just regain as soon as you stop doing it.