I was disappointed by this book mostly because it was so broad and not deep. Having read a lot over the past few years, perhaps I just have read everything that was covered in this book. If one is just realizing one's gut issues, this book would be a very good starting point. It is especially helpful in describing some of the tests that doctors would be likely to request particularly so that you know what those vials of blood or other bodily samples are telling you. It also gives some advice on how to overcome your fear and uneasiness in discussing gut issues with your doctor.