Women may make new eggs | Science News

Be a Champion for Science

Get your subscription to

Science News when you join.


Women may make new eggs

If true, finding could lead to new fertility treatments

7:44pm, December 13, 2012


For more than 50 years the matter had been considered settled: A woman grows all the eggs she will ever have before she is even born. But a study published this year, and then contested, suggests that this long-accepted fact may not be true.

Stem cells in the ovaries of both women and mice replenish egg supplies throughout adulthood (SN: 4/7/12, p. 8), reported a team led by Jonathan Tilly, a reproductive and developmental biologist at Massachusetts General Hospital. With aging, the stem cells’ capacity to make eggs diminishes, eventually petering out at menopause, Tilly says.

This article is available only to subscribing members. Join the Society today or Log in.

Get Science News headlines by e-mail.

More from Science News