Just to make things a bit more clear, the free ebooks from the Kresser site are quite different from his published books – which I don’t recommend.
“The Paleo Cure” describes an extreme elimination diet for those who are seriously sick and believe food is the cause but don’t know how to proceed with a cure. Typically they are the sort of people who have been on medications for years, and medications to deal with the side-effects of the other medications and they have run out of options to address any of it. “Unconventional Medicine” is about the healthcare industry and its alternatives.
The free ebooks are an introduction to nutrition for more-or-less healthy people, and the impact different kinds of food can have on us. Yes, we absolutely want to take nutritional advice on board with a genuine sense of our own choice – but having the information is of value to point us in a good direction and give us some sound evidence-based theory behind it.