Osteoporosis is a global threat because it can impact every human being as they age. Written in an easy-to-read style, the book updates the current knowledge of osteoporosis. Its purpose is to educate members of the medical profession about this widespread and potentially disabling disease. The book provides many topics range from the pathophysiology of osteoporosis and bone turnover markers, to hormone action in bone, to the basic biology of estrogen and bone, to the influence of stress in osteoporosis. The author reviews the latest evidence and provides annotated references so readers can examine the methodology, results, and conclusions of the studies. Separate chapters focus on vitamin D deficiency, decreased calcium transference, decreased enzyme activity and workup and recognition of secondary causes of bone loss. This makes the book an invaluable source of reference for those in primary care who increasingly have to deal with patients with osteoporosis in their daily clinical practice.