Saturday is World Down Syndrome Day, a day recognized each year by the United Nations to raise awareness about the genetic disease. Here are five things you need to know about Down syndrome.
1. Down syndrome is caused by an extra set of chromosome 21. Every cell in the body has 23 pairs of chromosomes, one from each parent, but Down occurs when one parent contributes extra genetic material. Older mothers have a higher chance of having a Down baby.
2. More than 400,000 people live with Down in the U.S.
3. The most common symptoms of Down include cognitive delays, low muscle tone and a small stature.
4. People with Down can lead full, independent lives. They are, however, at higher risk of developing heart, respiratory problems and certain cancers.
5. People with Down are living much longer than in the past, thanks to treatments for their health issues. While the average life expectancy in 1983 was 25 years, today it is 60 years.
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