These articles explain exactly why I listen to my coach about nutrition to reach my goals and NOT my family doctor.
Here are some examples of why I don't listen to my practitioner about nutrition and fitness: At my last office visit, my family doctor spouted the evils of too much protein. I just smiled and nodded politely. Next, the physician at the clinic told me I wasn't that much overweight according the BMI chart. When I explained that I was a bodybuilder, she kindly stated, "that's nice". I tried to nicely discuss body mass as opposed to the BMI chart and she just wasn't interested. They know precious little about bodybuilding, muscle density or the nutrition involved in weightlifting or fitness. The majority of them still believe in the BMI chart and the move more/eat less cardinal rule.
Further, when my physician asks what medications I take and I list the supplements I am on (NOT prescription drugs --- because I'm ridiculously healthy...case in point), they stare at me blankly and ask "what is that?" Next time you go, ask them if they know what BCAAs are. Odds are, they won't have a clue.
I'm not saying I haven't run into the occasional medical provider who knows what I'm talking about and who agrees the BMI chart should be abolished. But, boy are they few and far between.
I have nothing but respect for medical professionals. They are infinitely more intelligent than I am and have a job I wouldn't want for a million years. They know way more than I do about the human body and all its ways of suffering......just not necessarily nutrition.
PS....I hope you have a good coach. I do! She's worth her weight in gold.