The subject of smoking and the hormone disorders associated with it are of relatively recent interest. Its importance increases as the average age at death of the population increases and many of those people will have had a lifetime smoking. The book provides summaries of the present status of research into the effects of smoking and the apparent protection offered against certain diseases. Some research workers have suggested ways of predicting trends of disease patterns such as osteoporetic fractures. Not all the disorders discussed are adverse effects of smoking and these have provided impetus for developing non-tobacco methods of disease prevention. As the smoking population diminishes and the availability of lower tar brands increases, a reduction in many of the adverse disorders is expected and will form the basis for continued monitoring.