Newer versions of oral contraceptives -- with lower levels of estrogen and progestin -- reduce the risk of ovarian cancer more than older concoctions of birth control pillsResearchers at the University of Hawaii in Honolulu, whose work is published in the Journal of Obstetrics & Gynecology, say birth control pills have long decreased the risk of ovarian cancer. But over the years, doses of hormones in these pills have been decreased to reduce side effects -- and this seems to have an even stronger protective effect against the disease.
Studies show for women who had used any oral contraceptive a 50 percent reduction in risk of developing ovarian cancer compared to women who had never taken the pills. This risk was reduced by 38 percent
for women who took high estrogen and high progestin pills and by 81 percent for those taking pills with low levels of these hormones.
"Up to 42 percent of ovarian cancers might have been avoided if all women used some form of combined oral contraceptive pills," say researchers.
"An estimated 73 percent of ovarian cancers might have been avoided if all women used oral contraceptive pill formulation of low estrogen and low progestin."
