10 Interesting Down Syndrome Facts

Monday, February 6th 2012. | Human


Increase your knowledge about 10 interesting Down Syndrome facts. Down syndrome facts is a chromosomal condition caused by the presence of all or part of an extra 21st chromosome. It is named after John Langdon Down, the British physician who described the syndrome in 1866. The condition was clinically described earlier in the 19th century by Jean Etienne Dominique Esquirol in 1838 and Edouard Seguin in 1844. Let’s see the 10 interesting Down syndrome facts.
1. Down syndrome facts happens before conception; so there is nothing a person did, or didn’t do, to cause it. It happens when the egg, or sperm, is produced with an extra copy of chromosome 21. Taking prenatal vitamins will not prevent Down syndrome (but you should take your prenatals as Folic acid is important).

Down Syndrome Facts happens before conception 10 Interesting Down Syndrome Facts

Down Syndrome Facts happens before conception

 

2. Down syndrome facts is a Trisomy – meaning there are 3 copies, instead of 2, of any given chromosome. Medically Down syndrome is known as Trisomy 21 because it’s the 21st chromosome that is affected; it’s also the most common type of trisomy. Down syndrome is not a disease.

Down Syndrome Facts is a Trisomy 10 Interesting Down Syndrome Facts

Down Syndrome Facts is a Trisomy

 

3. Down syndrome facts that there are 3 types of Down syndrome – the most common (about 95% of cases) is nondisjunction which is a 3rd copy of the chromosome in every cell. Mosaicism (about 1-2%) happens when only some of the cells have the extra 3rd copy. Translocation (about 2-3%) happens when the long arm of chromosome 21 is attached to another chromosome.

Down Syndrome Facts 3 types 10 Interesting Down Syndrome Facts

Down Syndrome Facts 3 types

 

4. In the US, Canada, and some other countries, it is Down syndrome, not the possessive “Down’s syndrome.” (The UK is one country still using the possessive form.) In 1975, the United States National Institutes of Health convened a conference to standardize the nomenclature of malformations. Down syndrome facts that yhey recommended eliminating the possessive form: “The possessive use of an eponym should be discontinued, since the author neither had nor owned the disorder.” John Langdon Down first described it in 1866, but he neither had it, nor “owned” the syndrome so it should not take on the possessive form of Down’s syndrome.

Down Syndrome Facts not the possessive 10 Interesting Down Syndrome Facts

Down Syndrome Facts not the possessive

 

5. While Dr. John Langdon Down first described the common characteristics of people with Down syndrome, it was actually Dr Jerome Lejeune who first identified it as a chromosome 21 trisomy in 1959.

Down Syndrome Facts Dr Jerome Lejeune 10 Interesting Down Syndrome Facts

Down Syndrome Facts Dr Jerome Lejeune

 

6. While the likelihood of giving birth to a child with Down syndrome facts increases with maternal age; nevertheless, 80% of babies with Down syndrome are born to women under 35 years of age, as women in that age group give birth to more babies overall.

Down Syndrome Facts babies with Down syndrome 10 Interesting Down Syndrome Facts

Down Syndrome Facts babies with Down syndrome

 

7. Down syndrome facts is not related to race, nationality, religion or socio-economic status.

Down Syndrome Facts is not related to race 10 Interesting Down Syndrome Facts

Down Syndrome Facts is not related to race

 

8. One of interesting Down syndrome facts is Down syndrome occurs in about 1 in 800 live births.

Down Syndrome Facts about 1 in 800 live births 10 Interesting Down Syndrome Facts

Down Syndrome Facts about 1 in 800 live births

 

9. There is a wide variation in mental abilities, behavior and physical development in individuals with Down syndrome. Each individual has his/her own unique personality, capabilities and talents. In other words, people with Down syndrome are not all the same; just like individuals in the typical population are not all the same.

Down Syndrome Facts wide variation in mental abilities 10 Interesting Down Syndrome Facts

Down Syndrome Facts wide variation in mental abilities

 

10. The other of Down syndrome facts that life expectancy for people with Down syndrome has increased dramatically in recent decades from 25 in 1983 to 56 today.

Down Syndrome Facts life expectancy 10 Interesting Down Syndrome Facts

Down Syndrome Facts life expectancy



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