A nutritionist is not educated on placebo in any way, nor does he deal with it in practice. In fact, a nutritionist is not trained in science whatsoever. He deals exclusively with the physical realm of food. The advice he gives is strictly a matter of nourishment for the body (which the brain is an integral part of) and avoiding physical deficiencies of essentials including those required by the brain. Never mind that a nutritionist must conform to the official dietary guidelines, which means he is not allowed to diverge nor to advise in any way about any other diet. In the end, when faced with an unorthodox diet like Jordan's and Mikhaila's, the most he can do is advise on what to do to get closer to the official dietary guidelines. Everything else, he is not taught in any official manner, so this means if he deals with anything else, he learned it on Wiki or on the street on in articles we're discussing here. In effet, his credibility drops to zero. And then below, when instead of advising dutifully, he cries wolf about crap he knows nothing about.

So, all we got is some dude doing it wrong.