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Byline: Alice Dembner
Nov. 13--Menopause is no longer a bar to healthy women over 50 who want to have children, according to a study released today that indicates science is again pushing back the tide of human aging.
In the largest study of its kind, fertility specialists at the University of Southern California report that 42 out of 77 women ages 50 to 63 who underwent in vitro fertilization at their center gave birth to healthy babies. And three of the women had a second child in a subsequent pregnancy after 50. All of the women used eggs from younger donors.
"Women have not one biological clock, but one for the ovary and one for the rest of the biological system," said Dr. Richard J. Paulson, the lead author of the study in the Journal of the American Medical Association. "There is no definitive medical reason for excluding…