Congenital anomalies are birth defects, severe abnormalities that children are born with. These include conditions due to a genetic abnormality and conditions due to a failure of the fetus to develop normally in the early stages of pregnancy. For some conditions a cause is known, but for many it is not. Congenital anomalies are more common where people have been exposed to radioactivity or toxic chemicals. Sometimes toxic chemicals in the ground get into food products or into the drinking water supply. Global Burden of Disease divided congenital anomalies into the following 11 sections described below, but did not give separate data for each section for 2002.
1. Abdominal wall deficit.
3. Anorectal atresia.
4. Cleft lip.
5. Cleft palate.
6. Oesophageal atresia.
7. Renal agenesis.
8. Down's syndrome.
9. Congenital heart anomalies.
10. Spina bifida.
11. Other Congenital anomalies.
In 2002 Birth defects caused 3.7% of deaths in children under 15 years old.
Global Burden of Disease estimated in 2002 Birth defects to cause 1.8% of all Male and 1.9% of all Female burden of disease (Disability Adjusted Lost Years).
Birth defects caused 0.9% of all deaths worldwide in 2002, an average of 79 deaths per million people per year.