I think everyone's had a good point so far.
I'd treat it like UV radiation.
Is it bad for you? Sure.
Will it kill you? Well...It can
Are you gonna stay out of Sunlight? No.
Use Sunscreen when you know you gonna be getting a high dose? Yes.
Scared of Sunlight? About as scared as I am of a lead wedge.:beer2:
Respecting the fact that something isn't "good for you" and being afraid you'll drop dead in 10 years are two entirely different things.