Hormonal ContraceptionCombined Oral Contraceptives: A Comprehensive ReviewKILEY, JESSICA MD; HAMMOND, CASSING MDAuthor Information Department of Obstetrics and Gynecology, Northwestern University, Chicago, Illinois Correspondence: Jessica Kiley, MD, Department of Obstetrics and Gynecology, Northwestern University, 680 N. Lake Shore Drive, Suite 1015, Chicago, IL 60611. E-mail: email@example.com Clinical Obstetrics and Gynecology: December 2007 - Volume 50 - Issue 4 - p 868-877 doi: 10.1097/GRF.0b013e318159c06a Buy Metrics Abstract Millions of women use birth control pills for contraceptive and noncontraceptive reasons. Although there have been reports of rare adverse events, birth control pills do offer well-documented health benefits, including a decrease in the risk of ovarian and endometrial carcinoma. In addition, manufacturers continue to modify birth control pills to reduce side effects and medical risks. © 2007 by Lippincott Williams & Wilkins.