Susceptibility to cancer...

The conventional wisdom is that there are lots of risk factors for cancer and we need to be vigilant against them all of our lives... but what is your true risk for cancer if your cellular defense mechanisms are fully functional?

Or stated in the inverse, what is your likelihood of avoiding cancer once your DNA repair mechanisms start failing?

You could imagine a test that would tell you how well your cells react to fix DNA corruption. That test might correlate highly with your risk of acquiring cancer, leading you to perhaps have more proactive cancer screening if your cellular repair mechanisms are not working as well.