In many cases you don't know. You have a suspicion. It is probably nothing. Nope, it was something. Don't underestimate the human capacity for denial. On t

In many cases you don't know. You have a suspicion. It is probably nothing. Nope, it was something. Don't underestimate the human capacity for denial. On top of that you have interesting incentives that you get to think about with your doctor: are they recommending this treatment to make more money?