Common+or+Rare

=//**__Is Down Syndrome Common?__**//= = Down Syndrome is by far the most common and best known chromosomal disorder in humans, and the most common cause of intellectual disability. In the US about one out of eight hundrend births are children born with down syndrome. With that data thats about 6,000 children born with down syndrome. About 80% of the children born with down syndrome are born to women that are under the age of 35 = = = =//__Life Expectancy__//= = Children born with down syndrome can be expected to live past the age of 50. 1 in every 1,562 people with down syndrome live to be between 20-24, 1 in every 214 live to be between 35-39, and 1 in every 19 live to be 45 and above. =