This is part of the heading of a new anti-vegan book by a UKwriter who has switched to a low carb, high protein diet and feels better. He is scathing about nutrition messages in general and the people behind them, but all is explained by ex-CSIRO Researcher Peter Clifton. It seems John Nicholson took the well intentioned messages too far and didn’t match them to his constitution. Well worth a listen to this recent podcast if you are curious about debates around what constitutes healthy eating. http://www.abc.net.au/radionational/programs/lifematters/the-meat-fix3a-a-nutritionist27s-response/4256790
the original interview with John is http://www.abc.net.au/radionational/programs/lifematters/the-meat-fix/4255018 but I dont think that necessary to listen to, the reply includes enough references to it to get the story.