After gastric sleeve, there are no foods to avoid. For weight loss, avoid sugar and sweet foods. Protein should be your main food intake. If you haven’t eaten a particular food in a while, your body may feel heavy or nauseated after eating it. Staying on lean protein and less processed Whole Foods is the best plan.

This is best answered by a bariatric surgeon, but to my knowledge there is no food to avoid after you have recovered from the surgery and have advanced your diet from clear liquids to soft food then regular diet.