One of a series of healthy-lifestyle guides, this book provides information in A-Z format on vitamins and minerals, from Vitamin A to Zinc. It explains what each nutrient does, how it works in the body, where to find it in food, and how much we need to obtain every day. In addition to the basic background to each nutrient, the book also alerts the reader to specific requirements for all ages and for pregnancy and menopause, information on choosing supplements, and charts and tables to simplify the understanding of supplements.