It works for me, and it works for EVERYBODY I've seen try it. I am a 36year diabetic, and I follow many, many diabetics around the world. The science is valid, the logic is valid, but you have walls that prevent you from hearing the story. Read this with an open mind, think about his ideas, and try it if you don't believe.
Understand a few things: ancient humans followed animals. North America wasn't populated by migrating pineapple hunters! Refined grains, refined sugars, and even refined vegetable oils are pin-points on the timeline of life. We have no business eating them in quantity. Understand also the evidence that saturated fats and cholesterol are bad for us. You won't find the science because it doesn't exist. There's only a mish-mash of epidemiological evidence which no person should be drawing conclusions from. Example: house fires are 100& associated with firefighters. Let's get rid of them all! Pfft. That's not science. The fact that cholesterol exists in plaque and saturated fats raise cholesterol prove absolutely nothing. We've followed this advice for 40 years and we've only gotten sicker!
But we make bad decisions you say. Really How do you explain obesity in six month olds. How do you explain a type 2 diabetes epidemic in the American military These groups are fed by the food guides. If you think military personnel have no willpower, then you need to give your head a shake. Read the book and start thinking about things critically.