I found the book to be an excellent source of information in helping me get my son off of Nexium, healing the erosion in his esophagus, and controlling his acid reflux. It has a lot of information on other gastric disorders as well. She also points out that making life style changes in your diet can keep you healthy (which is what I did for my son)can keep you off of medications that have other ill effects. She also recommends the book "Eat Right for Your Blood Type" so you know what you should eat to stay healthy. If you have a gastrointestinal disorder this is the book to purchase; since it's self help, educational, etc. I had purchased other books but this is the best one and most helpful.