some people do gain most/all of their weight back, but I think that's because they expect the surgery to do most/all of the work. And it does - for the most part - at first. But you really have to put a lot of effort into it - and once you hit your goal, you have to put even MORE effort in to stay there. The difference is, your efforts will actually work (for a change!!) - but only if you follow the rules.