Mark Hyman deals with many myths associated with dieting and weight loss. He explains many not so obvious causes of gaining weight. He also reminds the reader of important rules to follow in order to keep not only thin but also healthy. All in all this is a good book for someone committed to losing weight and keeping it off. What I particularly liked about this book is its focus being shifted towards living healthy lifestyle. The author emphasizes the importance of cleansing the liver and detoxifying your whole body. This sounds to me like a revamp of the same good ideas so well presented in the book Can We Live 150 in which the author focuses exclusively on health and self-help (body cleansing, proper breathing, and using all the "natural doctors who are always with you"). Interestingly losing weight seems to be the natural outcome of one's healthy lifestyle. This has at least been so in my case.