Yep, radiation is good for you. It's just like taking vitamins. The only problem is that it makes you glow at night.
(Actually, after being properly exposed you are glowing in the daytime as well, but it's just not as noticeable, so it's your little secret.)
This glowing at night issue can be a real problem in an apocalyptic world. I mean, it's not only that people will start calling you "glow boy", but if it's your turn to stand guard at night to keep the BOL safe. There you are doing a slam dunk impersonation of a lighthouse beacon.
About the only real advantage to glowing comes from the fact that in general, there is a high percentage of women who like to leave the lights on while .....