After the gastric bypass and sleeve gastrectomy, your diet will be restricted over the first few months. The first week you will be on a liquid diet. Then you will be on a pureed diet for two weeks, and then a soft diet for two weeks. After that you will be able to eat whatever you feel like. You will also need to focus specifically on eating foods with high protein so you can improve weight loss and prevent muscle loss. Many people find that their tastes change after surgery, so you may no longer like what you used to eat. In particular, people have less interest in sweet foods after surgery.