Doctors are slow to catch on. I think they do this because there are so many fads that catch on and turn out to be horrible or your health. IE, hydrogenated veg oil (read trans fat) was once touted a "healthy" ingredient opposed to whole foods like lard and tallow. You need to find a progressive doctor. I look at it this way: certain things are meant to be eaten and certain things are not. Too much of anything can be bad and anything that is highly processed is usually **** for your body (read protein bars), regardless of macros.