Sure thing, but don't forget it's not necessarily all about calorie intake. People who are eating low-carb, and have sufficiently low circulating insulin, will almost certainly be in some level of dietary ketosis. This means that they will be pulling any shortfall in energy from their stored body fat (hence no hunger). That is, after all, why it's there. If someone is hungry then of course they should eat, but if they're not, then their body has sufficient fuel and nutrients currently available. Hunger should be the driver of what we eat and when we eat it, not numbers, macros and charts. But yes it goes without saying that we all have a way of eating where we feel our best and perform optimally. I'm not prescribing anything one way or the other, but I don't think it's true that low carb will necessarily cause any metabolism issues, which was the original point I addressed.