cancer and you

I'm at the dentist, getting my teeth cleaned (no cavities again, whee!) and thinking to myself how radiation paranoid the couple that run this office are, how I can understand they get exposed a lot, but not really feeling as endangered as they seem to expect me to feel. Then my hygenist mentions she's just completed her cancer treatment. And now it all makes much more sense. I feel for her, as much as I can for a mere aquaintence, but I don't share her fears. Of all that could kill me at any moment, on any day, cancer just doesn't seem the most likely.