After reading just about every diet book in existence, from Atkins to Eat Right 4 Your Type to vegan and vegetarian diet books, finally I have found a book not based on some polar not found in nature extreme theory, but a book based on the reality of what very healthy people have been eating for a very long time. Finally a book based on facts and science, not wild speculation and wishful thinking.
The diet recommended in this book is based on traditional foods used by very healthy people (and very long lived people) all over the world for thousands of years. These people all have one thing in common. They don't used processed, pasteurized, denatured food. Some cultures and lands use unpastuerized milk products as staples, others use raw meat or focus on cooked and raw meat. All peoples consume some form of unprocessed animal product, with fat and enzymes intact. They also use lacto fermented products, from yogurt to fermented fruits, vegetables and meats. The fermentation makes the food very easy to digest, adds friendly intestinla bacteria and preserves the food. The book also explains proper preparation of grains (usually soaking for a period of time) to remove phytates and make the nutrients more available.
The book is based on Weston Price's (others have validated his research and have conducted their own) research on "primitive peoples" diets from around the world. He was a dentist who traveled around the world checking the health of these people and then compared their health with the health of these same peoples when they ate processed food diets as they became available.
This is a very good book with very valuable information. The information on fats is extremely important.
Defintely the best book ever written on diet and nutrition and probably one of the best books ever written period.