Nutrition services for cancer patients nutrition is an important part of life cancer treatment recovery and prevention food is one of the few things you can be in control of during your treatment. 10 foods to eat during chemotherapy 1 oatmeal oatmeal provides numerous nutrients that can help your body during chemo it boasts ample amounts of carbs 2 avocado if your appetite is lacking avocados can pack necessary calories and nutrients into your diet this creamy 3 eggs fatigue . Nutrition for the person with cancer during treatment a guide for patients and families nutrition is an important part of cancer treatment eating the right kinds of foods before during and after treatment can help you feel better and stay stronger not everyone has nutrition related side effects but this guide. What foods to eat during chemo nutritional supplement liquid food instant breakfast items supplement shakes and butter milk are some items which a peanut butter peanut butter greatly improves the taste of food whether applied on bread cracker or toast and it is fish and red meat beef