This updated and expanded edition is an all-in-one sourcebook on the vitamins, minerals, and important supplements you need to strengthen your immune system, fight illness, slow aging, and maximize health.In addition to giving detailed factual information on each specific supplement, this book helps you design your own personalized nutrient program based on your health concerns and nutritional needs, and provides a scientifically documented Optimum Daily Intake (ODI) to follow. Included are sample worksheets and supplement checklists to help you incorporate these recommendations into your lifestyle.