The post about the MD who wanted the mom to take progresterone so she would bleed after 14 months of lactational amenorrhea was interesting. I have never heard of any increased risk of uterine cancer connected with this. There is reason for concern with women who may be exposed to unopposed estrogen which stimulates the uterine lining and can increase the risk of uterine CA. However, my understanding of the physiology of lactational amenorrhea is that lactation suppresses estrogen production in many women, therefore the concern about uterine cancer in this case would seem misplaced. I have done numerous paps on moms who are lactating and not having periods yet, and their tissues frequently remind me more of what I see in menopausal women who don't have HRT than anything else. Perhaps one of the physicians on the list could address this question. Ione Sims, CNM, IBCLC