If you want another great resource it is Prescription for Nutritional Healing the 4th edition by Phyllis A. Balch, CNC. I just got this book the other day and I just love it! this book is over 800 pages of great health related information. If you are into nutrition and natural healing then this is a book that you must add to your repertoire. It is around $25 but is worth it. I highly recommend this book!