Thirty may seem like the new 20, but not when it comes to a woman's fertility. According to new research, the odds are stacked against women who hold out to have children, particularly those who wait until they are in their 30s and 40s. One report said:

The study published by the University of St. Andrews and Edinburgh University in Scotland found that women have lost 90 percent of their eggs by the time they are 30 years old, and only have about 3 percent remaining by the time they are 40.

Females are born with all of the eggs they will ever have, so Dr. Marie Savard, GMA's medical contributor, advises women to take good care of them by not smoking and staying fit. Many women panic about missing the opportunity to be a mother, but raising children is not a whim decision or easy to do alone. If a woman's clock is ticking, do you think she should go ahead and get pregnant or hold out for a partner?