Agreed, Geoff. Actually was just reading Chapter 23 of GC, BC, in which GT documents how the whole world was hoaxed into today's low-fat high-carb disaster, via the simple say-so of less than a dozen dopey know-it-all "scientists" at the top of the US nutrition profession back in the 1970s.
Chapter 3 documents that diabetes was well understood as the "sugar sickness" for centuries before modern scientists and nutritionists decided it was so much more complicated. The original uncomplicated explanation was the correct one. Remove the sugar and other processed carb junk, and obesity and diabetes tend to melt away.
Everyday people around the world have been poorly served by the deeply flawed advice from influential nutritionists who somehow have dominated their field despite their lack of obvious competence. For decades, they've been busy misinforming the public - either inadvertently or deliberately - while drawing tasty publicly funded salaries. Perhaps one day they will apologise for the damage they have caused?