Agree regarding the "wisdom of crowds" in the sense that if we focus strictly on nutrition, it's taking a long time for the "crowd" to react and adjust to the advice dispensed by the "anointed." I do believe in the "anointed" dynamic, however, as there are many who feel life would be better if they were to tell people what to believe and how to live. We see this everywhere, especially in elected officials or those retained to advise them. Thomas Sowell's "Vision of the Anointed: Self Congratulation as a Basis for Social Policy" is a well-constructed premise with which I've become very familiar. While he didn't say it in exactly these words, it's a sound argument for rational skepticism.