Mild down syndrome

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  • How common is down syndrome
  • How common is down syndrome in the world...

    What causes down syndrome

  • Causes of down syndrome during pregnancy
  • How common is down syndrome in the world
  • Is down syndrome hereditary
  • Signs of down syndrome during pregnancy
  • Down Syndrome: Facts and Statistics

    People who are born with Down syndrome, also called trisomy 21, have certain noticeable traits and health problems. 

    The effects of Down syndrome include:

    • Short height, sometimes with subtle anatomical differences in the hands and feet 
    • A characteristic appearance of the eyes and face 
    • Skeletal malformations 
    • Impaired hearing 
    • Heart defects 
    • Lung defects
    • Weak immune system
    • Gastrointestinal malformations 
    • Overweight or obesity
    • Learning delays or impaired motor skills in some people
    • Early dementia

    All children who are born with Down syndrome develop one or more of these effects.

    However, many people who have Down syndrome usually do not develop all of the characteristics.

    Down Syndrome: Symptoms and Intellectual and Physical Traits

    How Common Is Down Syndrome?

    Down syndrome affects about one out of every 700 babies born in the United States, which is approximately 6,000 live births per year.

    More than 200,000 people in the United States are currently living with this condition. The incidence of Down syndrome has r

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