It's unbelievable how brazen bureaucrats can be. It's time to start hanging a few.
There was a prior thread on this. He can give out all the free advice he wants. His troubles came from when he offered paid dietary consulting. To accept money for your diet advice, you must be a licensed dietician.
He could have gotten around it by writing a book, and offering the book for sale on his site, and included an offer for free diet consulting if you bought the book.