I tell my doctor that I eat a low carb paleo diet. All she seems to care about is if my weight meets the official criteria for "normal". She's never really remarked one way or the other about what I eat. I've told her that I believe my diet to be as healthy as it can possibly be and she hasn't argued with me. Mostly she just leaves me alone to do my own thing. She did give me a prescription for some antibiotic ointment which cleared up a stubborn cuticle infection that I couldn't cure with over the counter or "natural" treatments. I certainly don't believe she is useless and I would go to her for acute problems but as for nutrition, I can't think of a situation where I would solicit her advice. She has even stopped pressing me to get my cholesterol checked. I tell her I won't take a statin so what's the point. She's not arrogant and she let's me do my own thing without protest. Nothing to complain about here.