If you get pregnant at age 25, your risk of having a baby with Down syndrome, for example, is about 1 in 1,250.

http://www.babycenter.com/404_what-are-the-risks-of-having-a-baby-if-im-35-or-older_3127.bc

If you get pregnant at age 25, your risk of having a baby with Down syndrome, for example, is about 1 in 1,250, according to the National Institutes of Health.