There are many subjects in this world that some people are very knowledgeable about...
And then there are subjects that people "think" they are knowledgeable about, but in reality know only what they have heard... I believe they call it "here-say"
And then you have those of us who have not only knowledge, but also empirical data.... and we can educate... even physicians. If your physician has an open mind, he will tell you the truth. His job is to write prescriptions and to make assessments and referrals. If you can get your doctor to listen to your years of experience on a topic and communicate this information intelligently, he will be your best friend. No schooling, and you are paying him while you teach him the truth ~