There are many different possible causes of mental retardation, otherwise referred to as impaired mental development, impaired intellectual development, impaired social development, impaired...
Could be a number of things....
1. Enviromental Toxins
2. In Utero Drug and Alcohol Exposure
3. Malnutrition
4. Brain Damage (Head Injury)
5. Poverty
6. In Utero Exposure to Diabetes
7....
It can happen. an automobile or other type of accident involving a sudden impact to the embryo while the mother is pregnant. It is also entirely possible for accidents- including accidents of war and...
Hyperthyroidism, whooping cough, chickenpox, measles, and Hib disease (a bacterial infection) may cause mental retardation if they are not treated adequately.