Are children with Down syndrome born only to older mothers?
No. Although the risk of having a child with Down syndrome increases with age, a child with Down syndrome can be born to mothers of any age. About 75% of babies with Down syndrome are born to younger women. The chance of a woman under 30 having a baby with Down syndrome is less than 1 in 1,000 and increases to 1 in 400 for women who become pregnant at age 35.
