" There were some parts that were very good. Interesting, making you think. With citations, so that you can read further. But. This book is mainly a marketing piece for the authors website (and webshop). And when it comes to the practical part (what you should do), then it turns out, that what you should do is to go to his website. Every other paragraph ends with this advice. Also there are lots of citations, but some of the evidence is rather thin (a single study on a few people/mice). These studies may be relevant in creating new ideas and new research, but are far away from being applicable in real life. I really wanted to like this book, and there are chapters that I did, very much. But all in all, it's just too much marketing "
— Eva, 2/1/2014