Reproductive disorders constitute functional impairment of the hypothalamic-pituitary-gonadal function and related neurotransmitters and paracrine factors. This book presents a synthesis of the literature on the current concepts on the role of neuroendocrine influences in reproductive dysfunction. The book is written in 3 parts: Part 1, general endocrinology; part 2, the endocrine disorders and related reproductive dysfunction, and part 3, syndromes associated with endocrine dysfunction.