I have started radiation for prostate cancer and diarrhea has started after my fourth treatment. I have been trying to eat a high fiber, low fat, tomatoes, whole wheat breads, no ice cream, some raw veggies, little red meat and lot's of chicken.This is a diet my wife and I started after her heart attack. What changes should I make?I've tried Kopectate, God that stuff is horrible, the doctor recommended Immonium AD, it hasen't been long enough to tell.How about yogurt and DanActive?