Does The Doctor Know Best?

I think we need to have a serious discussion on this issue.  I see people exclaim that if you don't follow what a doctor says, somehow you are a bad person.  Somehow, you are misguided.  Somehow, you put everyone else at risk.  Its like everyone treats doctors as the current GOD of the universe.

So does a doctor know best or not?  Doctors know a lot.  They've been to a great deal of medical training and many of them have had years of experience in the real world.  While that is great and beneficial, it doesn't mean they always know best.  I'm not trying to tear doctors down in what they do, but I'm trying to see if we can all find a little more balance.

At one time, the medical establishment thought that leaches were good and that if you had blood coming from you, that the blood needed to be drained.  They considered "blood" to be a very bad thing in your body. Now we know that isn't the case, but at the time this was the medical knowledge that all were expected to follow.