This highly informative book in its third edition, is a veritable treasure trove of information about amino acids, the basic building blocks of life. I believe that everyone interested in their personal health and well being must have this book on their shelves. It is well-written, easy to understand yet based in science. Orignally authored by the legendary Carl C. Pfeiffer, this book was recently updated by Dr. Eric Braverman, M.D.