Quoted from the 1990 LLLI Fact Sheet: Brock, KE et al. Sexual, reproductive and contraceptive risk factors for carcinoma-in-situ of the uterine cervix in Sidney. Med J Austr, 1989 A protective effect was found for women who breastfeed. Schneider II, AP. Risk factor for ovarian cancer. N Eng J Med, 1987. Breastfeeding should be added to the list of factors that decrease "ovulatory age" and thereby decrease the risk of ovarian cancer. Karen Zeretzke, MEd, IBCLC Baton Rouge, Louisiana [log in to unmask]