Hi all -- my first post here. As a doctor (though still in training
I'm appalled at that pharmacist's advice. It is true that a lot of those gynecological cancers are fed by estrogen, which is produced by the ovaries. When a woman is menstruating regularly and has never been pregnant, she is exposed to a continuous level of hormones that women who are pregnant do not have. And the ovaries work overtime, making them more at risk for cancerous mutations. So we who do not spend our teens, twenties and early thirties pregnant are at higher risk of ovarian cancer and *some* kinds of breast cancer. Using oral contraceptives simulate the hormonal state of pregnancy as well as suppressing ovulation, so they do lower the risk of ovarian cancer if taken over a number of years. There is *no* association between uterine cancer and never having been pregnant -- the strongest lifestyle association with uterine cancer is obesity, and with cervical cancer it is the HPV virus and multiple sexual partners, etc.
Should a woman decide to get pregnant to make her 1% lifetime risk of ovarian cancer decrease to .75%? I think that overall, the risks of being pregnant and bearing children, as well as the stresses of childrearing must at least equal the increased risk of ovarian cancer, which is quite low in prevalence.
Sorry to get on a soapbox -- I couldn't resist! Nice to meet everyone and to have this board.
Julie