Getting nutrition both before and after your gastric bypass surgery is very important. For starters, you body after the procedure will not be able to get sustainable nutrition for over a month. Your surgeon will give you a dieting instruction to help with you preoperative meals. You will also be scheduled to speak to a nutritionist who will be able to further explain what you can and should eat as well as why you should eat it. It will also be helpful if you loose 10 pounds or more prior to the procedure as this will help reduce the shock to your body caused by the rapid weight loss after the surgery.
After you have completed the surgery you will not be able to get anything of nutritional value for several weeks. You will first be on a clear liquid diet which means you will be limited to things that you can see through. Since water is a necessity of life it will be more important if you focus in ensuring that you have a sufficient supply of water rather than anything else. You will soon be able to move into things like watered down apple juices and clear bullion broths. Remember that at first this is a clear liquid diet and if you cannot see through it easily then you should not be ingesting it. Do not forget to stay away from sugars at all cost or you may get dumping syndrome.
After about 2 weeks you will be able to start ingesting shakes and pureed foods that will be able to contain the nutrients you body needs. Eventually you will be on your way to a full recovery and ingesting foods that are high in nutrients. Remember that in most bariatric surgeries the surgeon will make your body malabsorb nutrients so that you can loose weight. This malabsorption is done through the rerouting of your small intestines. If your procedure does not include the rerouting of the small intestines then this nutrient issue will not be as bug of an issue for you, but no mater how you look at it make sure that you are always eating foods that are high in nutritional value.