Eat only food that looks like it did when it was still growing. no packages, no upc codes, no hidden ingredients, no grains. Meat, Fish, Eggs, Nuts, Seeds, Fruits, Vegetables and Fresh water that's it. the simpler the better. fermenting is good, raw is good, cooking is just fine too. i like to eat more raw foods in the warmer weather, more cooked foods in the winter, but that's just me. The Garden of Eating talks about this kind of diet. there is a balance to be met though. it's important to eat predominantly green leafy/non starchy veggies, somewhere around 70% i think it is. I've read litereally hundreds of books about nutrition and there are points in this book that i disagree with, but all in all, it's pretty darned good.