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Who is affected by Down syndrome
Down syndrome occurs in all cultures, ethnic groups, socioeconomic levels, and geographic locations.
- About 2,085 babies in the United States were born with Down syndrome in 2006.1 That's about 1 out of 733 births.2
- The risk of a 20-year-old woman having a baby with trisomy 21-type Down syndrome is 1 in about 2,000. By age 45, a woman's risk for having a child with this type of Down syndrome is 1 in 20.3
| By: | Healthwise Staff | Last Revised: August 4, 2009 |
| Medical Review: | Michael J. Sexton, MD - Pediatrics Siobhan M. Dolan, MD, MPH - Reproductive Genetics David Smith, MD - Family Medicine | |
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