what is down syndrome?

Down syndrome is a genetic condition that causes delays in physical and intellectual development. It occurs in one in every 691 live births. Individuals with Down syndrome have 47 chromosomes instead of the usual 46. In most people with Down syndrome, there is an extra or partial copy of the 21st chromosome (also called Trisomy 21 because there are three copies of this chromosome instead of two), which changes the body and brain’s development.

Down syndrome is the most frequently occurring chromosomal disorder. It is not related to race, nationality, religion or socioeconomic status. The most important fact to know is that very little separates individuals with Down syndrome from those without it.

For more information on Down syndrome, please visit ndss.org