There's plenty of pyschological and behavioral changes that you need to go through to be a "success". Some people, for whatever reason, will sabotage their own success and regain the weight. Also, the procedure done now is so much more advanced than what was offered years ago. No matter the procedure, it still takes effort and good, healthy eating habits. You still need to stay active. Everyone is different and will have varying success and experiences with the food they eat.
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