A comprehensive, detailed clinical resource, distills the knowledge acquired by author Malcolm Carruthers in his 20 years of research and clinical experience in diagnosing and treating the andropause. Carruthers documents the history of testosterone treatment from antiquity to the awarding of the Nobel Prize Adolf Butenandt and Leopold Ruzicka for synthesizing testosterone and patenting its production some 4,000 years later. He discusses the causes of androgen deficiency, the male menopause or andropause, and its differential diagnosis. The text includes reviews of the literature in each section and a fund of bibliographic references gleaned from the author's years of research in this field.