Osteoporosis is indeed a global threat because every human being is vulnerable and subject to it as time goes by. The authors point out the enormous scale of the problem in terms of human suffering, morbidity and mortality on the one hand and the astronomical national costs on the other. The book is up-beat and optimistic with a touch of humour; it is scientifically based but provides easy-to-follow guidelines for lifelong maintenance of skeletal structure and function. Osteoporosis is preventable, if doctors want to, and every doctor can contribute. Bone is every doctor's and every body's business.