Book excerpt: Written by leading international specialists, this book provides a comprehensive, state-of-the-art overview of endocrine-based female reproductive disorders. Particularly focusing on the Hypothalamus – Pituitary – Ovary (HPO) axis as the main driver of reproduction in women, it discusses amenorrhea; chronic anovulation and polycystic ovary syndrome as the most common dysfunctions of the HPO axis; endocrine diseases as possible impacts on the HPO axis; uterine disorders related to estrogen/progesterone; and the impact of endometriosis and uterine fibroids on reproduction. It also addresses infertility and menopause as hormone-related disorders in women and endocrine changes during pregnancy and lactation, and in breast disorders. The book is intended as a major reference for endocrinologists, gynecologists, and obstetricians, as well as basic and clinical scientists. It is published as part of the SpringerReference program, which provides access to live editions constantly updated through a dynamic peer-review publishing process.