This book is by The Life Extension Foundation. It is the 4th edition from 2003. It uses scientific protocols that integrate mainstream & alternative medicine. It is based upon thousands of research studies and the clinical experience of physicians around the world. This revolutionary new reference book is the only one of its kind to make specific recommendations for combining mainstream therapies with nutrients, hormones, & unique medications to provide people with their best chance of preventing or gaining control over serious medical disorders. 118 difficult-to-treat medical conditions are discussed in this revolutionary reference book that are documented by thousands of published studies from internationally recognized scientific journals. Each unique protocol provides an explanation of how natural supplements work to prevent & often reverse the degenerative effects of disease and aging. Each protocol also includes an easy-to-read summary that recommends specific supplements.