Hello and welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Dear foods like applesauce,bananas, pears, peaches, and melons,boiled white rice,cooked beets, spinach,white bread or toast,cream of rice or cream of wheat,low-sugar cereals (avoid high fiber cereals such as wheat bran),pasta,peanut butter,potatoes can taken orally. foods to avoid fresh vegetables, skins and peels of fruit ,dried fruits, such as raisins and dates,dairy products ,pineapple and coconut) Dried fruits, such as raisins and dates Dairy products (even people who ordinarily tolerate dairy products may have symptoms similar to lactose intolerance for a while after their colon surgery, though an exception may be buttermilk, yogurt, or small amounts of ice cream),very high fiber food such as wheat bran cereals and bread Beans, peas, and lentils,nuts and seeds (especially if you have diverticulosis),popcorn,brown rice and wild rice,cakes, pies, cookies, and other sweets high fat and fried food such as fried chicken,sausage, and other fatty meats,beer and red wine,hot soup or drinks,too much caffeine chocolate,very spicy food,licorice,prune juice etc.. he is also prone for dehydration, repeated infections. please consult your treating doctor if he developed any complications or infections. Hope I have answered your query. Let me know if I can assist you further.