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What is the life expectancy of someone with Down syndrome?

Down's syndrome lifespan doubles. The life expectancy of people with Down’s syndrome has doubled in 15 years from 25 to 49 years, a new analysis of US data reveals.

What can Down syndrome be caused by?

Down syndrome can be caused by one of three types of abnormal cell division involving chromosome 21. Trisomy 21 – More than 90% of Down syndrome cases are caused by trisomy 21. An extra chromosome (chromosome 21) originates in the development of either the sperm or the egg.

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