The menstrual cycle is the series of changes a woman's body goes through to prepare for a pregnancy. About once a month, the uterus grows a new lining (endometrium) to get ready for a fertilized egg. When there is no fertilized egg to start a pregnancy, the uterus sheds its lining. This is the monthly menstrual bleeding (also called menstrual period) that women have from their early teen years until menopause, around age 50.
Current as of: November 7, 2019
Author: Healthwise Staff Sarah A. Marshall, MD - Family Medicine Martin J. Gabica, MD - Family Medicine Kathleen Romito, MD - Family Medicine Rebecca S. Uranga, MD - Obstetrics and Gynecology
Medical Review:Sarah A. Marshall, MD - Family Medicine & Martin J. Gabica, MD - Family Medicine & Kathleen Romito, MD - Family Medicine & Rebecca S. Uranga, MD - Obstetrics and Gynecology