I chose this book after reading an article in the NYTimes about the author, a doctor at Stanford.  He's apparently trying to bring back the physical, which given the brevity of my recent physical, makes tons of sense.  I then looked at the book on Amazon, where out of 450 or so reviews, over 80% were five star.  That also seemed promising.  I, however, would probably give it 4 stars, even possibly three.   I found the first two thirds of the book slow going, and the last third intriguing.   The last hundred pages I read in one sitting.  In the end, I was pleased with the book, but it took me a while to get there.  One other strange fact I learned from the book, apparently ferengi is Amharic (Ethiopian) for stranger.