You're pretty much going to be in a lifelong battle with the sunshine! If you have to be out in it just make sure you use a really good sunscreen and maybe wear a big hat or something like that. I know they make clothing with SPF built into it, maybe you could look into that? Your skin will definitely burn easier now that you have had radiation. I have basically had a love affair with the sun since I was really young. I do a lot of hiking, play tennis, swimming, I was a lifeguard, etc., I never realized my natural skin color was so pasty white until this summer when I didn't get to go out at all! So I'm keeping an eye out for a fancy hat to wear around! Haha.