I had my sleeve gastrectomy surgery on July 21 and I will admit during the 14 pre-op diet, I cheated by eating too much lean meat. Many of days I wanted to add chips or fried foods, but I never added any starchy products or high carbohydrate items. I was free during my pre-op diet to each as much vegetables and egg beaters as I wanted each day. Good luck with your pre-op diet.