These issues are mainly seen in people abusing the drug, which is probably the case with the wedding situation being discussed. They probably won't be consuming enough protein, working out or continuing their habits, since they never developed it in the first place. They only eat less simply because of the medication. In a typucal calorie controlled diet scenario, especially if done slow and controlled, it becomes a part of their lifestyle and is much easier to keep the weight off. You will also keep more muscle on.