I found the book extremely informative and well written. Complicated yet the message was clear. The problem with the book for me was, it did not really contain a meal plan or very much direction. I have read many books on the subject and was able to take the information from other sources to piece it all together. Most helpful was that I had read a book by Barry Groves that they quote from numerous times throughout the book. Perhaps they will write a sequel that will put the pieces together with a life style plan.