About a week into radiation, what little I could eat all tasted very salty. Noone had any idea what caused it. This lasted for several weeks, by then I couldn't eat anything and could only drink bottled water and Ensure Plus(I didn't have a peg and only lost 5 lbs). By the time I got done with radiation and for about a year afterward, I couldn't taste salt or sugar at all. You could put a pile of each in front of me and I couldn't tell which was which. Don't remember exactly when it came back, but it is almost normal now.