text:  tigers and kittens. The tigers in prostate cancer will kill you, and they're relatively rare. But if you have one of those, you certainly want to treat it and be aggressive to improve the chances of survival. But most prostate cancers are diagnosed at a relatively early indolence stage, and they'll never go on to kill you. And you want to be able to find those and not treat them, because men who undergo prostate cancer treatments can have all sorts of side effects, particularly in the early onset.