I have a SIL who is doing a low carb diet. In my opinion she did not ever need to lose any weight but maybe she felt she needed to lose a few pounds. She now looks like someone who has been living in a concentration camp. She must wear a size zero and she is about 5'6 or so. She no longer looks healthy but continues to eat no carbs or very few carbs at all. Is there a point on that plan where you are supposed to go on a Maint plan of some kind? I'm concerned about her. She looks terrible and sickly not healthy and trim. Any ideas from those who follow that program?