Down syndrome (also called
Trisomy 21 ) is a genetic disorder that occurs in approximately
1 of 800 live births. It is the leading cause of cognitive impairment.
- Down syndrome is associated with mild to moderate learning disabilities, developmental delays, characteristic facial features, and low muscle tone in early infancy.
- Many individuals with Down syndrome also have heart defects, leukemia, early-onset Alzheimer's disease, gastro-intestinal problems, and other health issues. The symptoms of Down syndrome range from mild to severe.
- Life expectancy for individuals with Down syndrome has dramatically increased over the past few decades as medical care and social inclusion have improved.
