Hello! My Mom has constipation so often after the colonrectal surgery. Fortunately, she did not have to go for Chemo and Radiation. So that she is very careful with the food. She does not eat meat much. She tried to avoid red meat, processed meat, oily and spicy stuff. She eats more of green vegetable and fish a lot. She eats beans, eggs and fresh fruits and the food which has a lot of fiber. It is hard for her when she gets constipation. She is 80 years now and so grateful she is free of cancer. I would suggest something light which melts easily to digest. Please also seek advice from your doctor. Oatmeal for breakfast and yogurt with mixed berries are good. It depends on individual as well. I have seen some patients who have gone through Chemo and Radiation, they menioned that they don’t Feel like eating. They lost appetite and throw up for the first chemo. They later can eat slowly to overcome the chemo treatment, Hope this helps and I will be praying for you. Best, Soul