I am 4 months out from rads/cisplatin now and had sig digestive issues up until about a month ago. I saw a GI, had a ton of studies, tried different meds, different diets and finally it all just went away w time. I think now that it was an effect of the cisplatin on the intestinal lining. Hope yours resolves like mine. I did high protein smoothies only until I was feeling better and now I can eat almost everything (except things that don't work w the dry mouth of course :)). Good luck!