A comprehensive, detailed clinical textbook, Androgen Deficiency in the Adult Male: Causes, Diagnosis and Treatment explores the male menopause concept. It explains the causes of androgen deficiency in men, its differential diagnosis, and how to treat it. The author presents a large amount of new research data along with expert practical clinical advice and observations from 20 years of work on testosterone research and his clinical experience. The book includes a thorough subject index, chapter-by-chapter literature reviews, and a fund of bibliographic references gleaned from the author's years of research in this field. These features make it a technically thorough clinical guide and a cohesive and readable textbook.