After a bariatric surgery, doctors recommend consuming clear liquids, blended and pureed foods, and thicker liquids such as nonfat or 1 percent milk. Lactose-free beverages, sugar-free pudding and sugar-free, nonfat yogurt are also good choices, according to the University of California San Francisco Medical Center. Suggested soft foods include hot cereals, cottage cheese and yogurt.
Patients generally start a clear liquid diet after a gastric bypass surgery and slowly add thicker liquids to their meals after their hospital discharge, states the UCSF Medical Center. They can eat blended and pureed foods two weeks after the surgery and consume supplement drinks or powders containing at least 20 grams of protein and less than 200 calories. Recommended thicker liquids include cream of rice, cream of wheat, low-fat soups and soy-based, low-calorie drinks.
Two to four weeks post surgery, patients may consume canned fruits, scrambled egg whites, noodles, mashed potatoes and properly cooked, pureed vegetables, advises the UCSF Medical Center. Foods to avoid include creamy liquids, fresh fruits, raw vegetables, rice and bread.
It is essential to wait for 10 minutes in between two to three sips or bites of any new food to avoid experiencing nausea or pain, because the body has a very small stomach size following a bariatric surgery, notes the UCSF Medical Center. Doctors suggest drinking extra water and caffeine-free, noncaloric beverages between meals to keep the body hydrated.