According to the CDC, Down Syndrome is the most common chromosomal disorder. Each year 6,000 babies are born with Down syndrome which is estimated to be about 1 in every 700 babies. Here is a timeline showing Down syndrome progression over the years:
Down Syndrome Timeline
1866- British Physician John Langdon Down, first described the genetic disorder as “Mongoloid” based on patients similar characteristics.
1876- An initial association between premature “senility” and Down syndrome is discovered.
1929- Life expectancy is approximately 9 years of age
1932- Abnormal distribution of chromosomes was first suggested as the cause of Down syndrome.
1946- Life expectancy is approximately 12 years of age.
1948- Evidence between Alzheimer’s and Down syndrome is first published.
1959- Dr. Jerome Lejeune discovered Down syndrome is the result of an abnormality in the chromosomes.
1959- The term Trisomy 21 is used on the medical community to describe Down syndrome.
1960- Researchers discover a type of trisomy called translocation
1961- Researchers discover a type pf trisomy called Mosaicism.
1965- The World Health Organization (WHO) accepts the name Down syndrome as the standard name to use.
1970- Life expectancy is approximately 25 years of age.
1976- Amniocentesis comes into common use in the United States
1987- A gene associated with Alzheimer disease is discovered on Chromosome 21
1994- CDC announces he prevalence of Down syndrome from 1893-1990 was 1 in 1087.
1997- Life expectancy is approximately 49 years of age.
2006- Life expectancy is approximately 60 years of age
Today is World Down Syndrome Day. A campaign designed to create a single voice for advocating for the rights, inclusion and well-being of people with Down Syndrome. Resources on this page include information on inspiring articles and facts on people with Down Syndrome.
Established in 1994, Band of Angels provides support for individuals with Down Syndrome and their families. The website offers links on Down Syndrome support groups and a litany of topics including, adoption, autism and education.
A U.K. based international organization comprising a membership of individuals and organizations from all over the world. Disseminates information on Down Syndrome including prenatal diagnosis, early intervention, education, medical, health, employment, aging and human rights. Down Syndrome International also promoted World Down Syndrome Day (March 21) as a day dedicated to people with Down Syndrome.
Provides fundraising, education and governmental advocacy for the Linda Crnic Institute for Down Syndrome. Resources available on the website include, information on research, medical care and facts on Down Syndrome.
Dedicated to helping and advocating for individuals with Down syndrome from conception and throughout life. Offers support to parents who are new to the Down syndrome diagnosis by connecting parents to each other.
NADS is the oldest organization in the United States serving individuals with Down syndrome and their families. Also provides families with information and resources that will enable them to access appropriate services and educates the public about Down syndrome.
The purpose of the NDSC is to promote the interests of people with Down syndrome and their families through advocacy, public awareness, and information. When we empower individuals and families from all demographic backgrounds, we reshape the way people understand and experience Down syndrome.
NDSS provides resources to new and expectant parents and offers a toll-free helpline and email services. NDSS also focuses on transitions , wellness and education
The following are articles highlighting stories around the country on Down syndrome:
