<qa>  What is the daily caloric intake of patients?1. Prior to the gastric restrictive surgery, eligible patients will receive dietary instructions by a registered dietitian for a daily diet consisting of 5 liquid meals using the HMR 800 meal replacement product Health Management Resources, Inc. with 44.5 grams MCT oil or 41 grams LCT oil added. Patients in both groups will be given a list of supplemental foods that are suitable for the study. They may choose to eat up to an additional 700 kcal per day from this list and will be asked to complete food records for monitoring of their caloric intake. Depending on how much food each patient eats, this will be a daily caloric intake of approximately 1170-1870 calories. All patients will be instructed to refrain from any alcohol intake while in the study. 