I was reading one of Taubes's books last night. He was making a strong point about processed flour having all the nutrition stripped out of it, leaving just empty calories. Ditto for processed white sugar. Both the flour and the sugar then have ungodly long shelf lives. Both can be shipped over long distances and stored almost forever. And very tasty things can be made of them, with just an egg and some water. Maybe some PUFA oils. MMMmmmm, Oreos -- nobody can eat just one.
... then PRESTO, wherever those processed commodities end up, people soon exhibit the same modern maladies. Big mystery? well, not so much, evidently.
So I find Taubes to be pretty much on the mark, at least in terms of stark cause and effect. He's not harping on mere carbs (like tubers and such that some hunter-gatherers thrive on), it's the processed industrialized carbs that he's on about.
I have great faith in fools; self-confidence, my friends call it.
Edgar Allan Poe