Many women are waiting until their 30s and 40s to have children. Age is a growing cause of fertility problems. About one-third of couples in which the woman is over 35 have fertility problems.

Aging decreases a woman’s chances of having a baby in the following ways:

• Her ovaries become less able to release eggs.
• She has a smaller number of eggs left.
• Her eggs are not as healthy.
• She is more likely to have health conditions that can cause fertility problems.
• She is more likely to have a miscarriage.