Academia has a pretty bad track record when it comes to nutrition advice. "Food science" is mostly the study of how to maximize food manufacturer profits, not how to construct a healthy diet.
But if the researchers don't communicate effectively with the rest of us, or with our physicians, then why do they even bother going to work in the morning? It's not my job to read scientific journals, and the doctors are as confused by the barrage of junk science as anyone else.
Smug, uninformed tool for corrupt authority