Watching nutrition experts is like watching economist...they can each prove that they are right, even though they are making mutually exclusive claims. No doubt they mostly all have good intentions...I don't begrudge them their enthusiasm.
While I won't claim that wheat is some magical food, no book will change my view (based on what I've seen), that I'm better off eating wheat and fruits than KFC.
To me it seems that the modern human diet is the most peculiarly unatural thing. It might also be the recipe for human intelligence and longer living.
I'm worried about the adverse effects of some foods.
Bowel cancer is somewhat preventative and food related: http://cancerhelp.cancerresearchuk.org/type/bowel-cancer/abo...
Unsurprisingly, those dieticians overwhelmingly say that meat-heavy diets like paleo (ranked 25th out of 25) are horrific. The idea that there is some controversy about this is mostly due to people on HN without much formal education.
http://noglutennoproblem.blogspot.com/2012/03/wheat-belly-bu...
It sounds like the book often misrepresents the research that it cites.