Books you might want to read about enzymes: 1. Enzymes: The Key to Health by Howard Loomis 2. Enzyme Nutrition by Edward Howell 3. The Complete Book of Enzyme Therapy by Anthony J. Cichoke Links to Sites that are helpful: http://en.wikipedia.org/wiki/Enzyme http://www.enzymestuff.com/digestion.htm http://www.enzymedica.com/downloads.php http://www.living-foods.com/articles/enzymes.html http://digestive.niddk.nih.gov/ddiseases/pubs/yrdd/ http://www.nexusmagazine.com/articles/Enzymes1.html Hope this helps get you more informed, If you would like Dr D to nutritionally examine and test you, call our office at 614-529-8171 Dr. John M. DiVelbiss, DC 3974-C Brown Park Dr., Hilliard, Ohio 43026 614-529-8171 * http://www.DrDhealth.com