How common are chromosomal problems?

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How common are chromosomal problems?

They’re more common as you get older. For example, if you are older than 35, your chances of having a child with Down syndrome increases. According to the American College of Obstetricians and Gynecologists, your chances are:

  • 1 in 1,480 at age 20.
  • 1 in 940 at age 30.
  • 1 in 353 at age 35.
  • 1 in 85 at age 40.
  • 1 in 35 at age 45.

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