I cant say that i know a whole lot of science about it, but i feel that the sun is very important to our health. Not only does it feel great to lay out in it but it helps the acne on my back too, my skin on my face is crystal clear all of the time i dont think ive had a zit since starting rpd, but my back on the other hand still experiences cystic acne, not as bad as before, but still definitely there. However when i went on vacation last august with my family i went tubing for 3 hours and got very sunburned on my back and the next day my back acne was very near completely gone, im sure some redness would have been visible if not for sunburn but my acne is the kind you can feel as a lump in the skin and my back was completely smooth. I think that the reason my back still has acne is the lack of sun and air exposure. I tried to sit outside for 30 minutes to an hour most days last summer and it helped but i still had acne, this summer i hope to sit out for an hour most days and see if i can get all of my acne cleared.
I know the sun can cause cancer but isnt the primary food for cancer sugar so wouldnt a balanced rpd diet help limit the risk? Im not sure but i guess time will tell haha