I saw a video that stated that you have about 2 years before you start to feel the hunger again, so you have to have yourself and your eating habits retrained before the hunger hormone starts back up or you will revert to being overweight.
Go for bypass i start gaining weight again after 1 year
Because a gastric sleeve is such a serious procedure, it is a good idea to prepare the body for living this way. Approximately two weeks before surgery (this timing can change depending on your doctor/starting weight) you need to start an all-liquid diet, in order to shrink your liver and make surgery safer.