I am not sure I believe that medical science knows best because medical science so often disagrees.
I currently have an open wound that the surgeon who did the operation said needs dressing daily. The xxx dressing keeps coming off so in the end i suggested to the nurse that we just leave it off, she sucked her teeth, said 'surgeons in structions'. Then she said, 'Of course some surgeons believe that wounds like this should not be dressed but should be just left to heal, but with careful hygiene. So that is what I am now doing. Two respectable medical opinions that oppose each other. I chose the one that was best for my purposes.
We are stuck, we either trust the official advice we are given in any circumstance or we look for the opposite view from an equally respectable source and make our own decisions.
The problem is that we have been brought up to believe that science is right or wrong, no grey areas. Science has always admitted the possiblity of future knowledge, but has always been uncomfortable with equally respectable alternatives. We need to accept that science too has grey areas.