Physiology of Progesterone -- Pharmacology of Progestogens -- Progestogens in Infertility Practice -- Progestogens and Threatened Miscarriage -- Progestogens and Recurrent Miscarriage -- Progestogens in Preterm Labour.- Abnormal Uterine Bleeding -- Progestogens in Contraceptives -- Progestogens and Endometriosis -- Progestogens and Breast Cancer -- Progestogens in Endometrial Cancer -- Progestogens and the Menopause.- Progestogens and Autoimmunity -- Progestogens in Non-gynecological Indications.