Unfortunately, I purchased and read this book on steroids. Of all the books on the subject, this was by far the worst. The "sources" of information (if you can even call the people sources) are questionable at best. He invents information and passed it on as fact. He will take 1 out of 25 studies -- the negative one and cite that as proof of his point, while ignoring the other 24 favorable or neutral ones.I disagree with the 1/2 of the reviewers in this topic, though some bring up good points. Mr. "Objective" Nugent is not one of them. He has a major axe to grind.All in all, not worth it.