Well, there are two certainties in life. Death and Taxes (Thanks Benjamin).
Can you influence any of them ?
Probably not. As Obs G and Rad's have quite correctly said, "screening" has to to be taken with a pinch of salt. Certain things "work," a lot doesn't.
I was brought up with "Wilson's Criteria for Screening." An old mantra, the WHO have tried to re-write it, but it's basically the same thing.
Spend your money on the accountant, don't smoke, check out your lifestyle and try your utmost to avoid doctors (and nurses). We do :-)