Andrology is the branch of medicine that deals with male reproductive health, particularly male infertility and sexual dysfunction. It is the counterpart of gynaecology. It is also closely related to the fields of urology and endocrinology. Andrology covers a wide number of conditions, including male fertility, penile problems and genitourinary disorders. It also deal with vasectomy, prostatectomy, and circumcision. The book aims to shed light on some of the unexplored clinical aspects of andrology and the recent researches in this field. From theories to research to practical applications, case studies related to all contemporary topics of relevance to this field have been included herein. This book aims to serve as a resource guide for students and experts alike and contribute to the growth of the discipline.