Just in time for Halloween, University of Glasgow medical student Mike McCormick released diagrams of the female and male reproductive systems made out of all the kinds of candy I hated to get when I went trick-or-treating as a kid.
Women who are over 40 have a notoriously hard time getting pregnant by in-vitro fertilization (IVF), and it’s long been assumed that their problem stems from “old eggs”. But a preprint now available online at the Journal of Endocrinology suggests that the real problem might be the aging of the cells that surround the…
Until about 2004, most scientists believed that women were born with all the reproductive eggs they would have for the rest of their lives. Then a scientist named Jonathan Tilly published research that claimed women might actually replenish their supply of eggs throughout their lives.