Bertrand Russell, a British Nobel laureate and a champion for freedom of opinion, wrote, “When a man tells you that he knows the exact truth about anything, you are safe in inferring that he is an inexact man.”
Having a good debate about matters of your health is not a bad thing. As has been said, “It is better to debate a question without settling it than to settle a question without debating it.” But recently, having a difference of opinion has become too closely associated with the polarized politics that is endemic in many countries. People have lost their sensibilities amid noisy pundits arguing nonsense about facts and fake news.
So if you do not know who to turn to for the “truth”, you are not alone. And maybe you are chasing in the wrong direction.