Over the last few years there has been a substantial increase in the interest not only by the medical profession but also the media in the role of testosterone in health and disease. This interest has been mirrored by a rapid increase in research publications and development of improved modes of delivery of testosterone therapy. The second edition of this successful pocketbook provides clinicians with an update on the management of testosterone deficiency in men, and covers updated management guidelines, a new chapter on testosterone and mortality, and a concluding chapter of helpful case vignettes.