For the eighteen million American women afflicted with early bone-loss disease, here is the first comprehensive guide to identifying and controlling the condition before it progresses to osteoporosis Osteoporosis, which afflicts more than half of all American women over the age of fifty, is a widespread and all-too-familiar problem. Osteopenia, a milder bone-loss disease that is the forerunner of osteoporosis, is less well known but affects an estimated...