The surgeon will require the diet before surgery. The diet is aimed for losing the fat, especially the abdominal fats much as possible. It will decrease the surgical risk. The type of pre op diet or diet before surgery depends on the kind of surgery that you will undergo. The common one is called as liquid diet. But, the doctor will not require the patients to do this diet all the time. It is done in the last two weeks before surgery. You have to know all about 2 week liquid diet before gastric sleeve if you want to take the gastric sleeve surgery.
The 2 week liquid diet before gastric sleeve program is low calories and frequently between 800 up to 1200 calories. You will be recommended to drink the sugar free and low carbon, which shake higher protein. The protein is needed for helping to preserve the lean muscle mass. It can help you in the recovery period after taking the surgery. You are recommended to consume the protein from 70 up to 20 g daily.