The most common cause of mental retardation in the United States is

Question

Quizplus · Accepted Answer

Fetal alcohol syndrome is the most common cause of mental retardation in the United States. It is caused by the mother's consumption of alcohol during pregnancy, which can lead to permanent brain damage in the developing fetus. Anencephaly and spina bifida are both neural tube defects that can lead to physical disabilities and may be associated with intellectual disabilities, but they are not as common as fetal alcohol syndrome. Thalidomide is a medication that was used in the 1950s and 1960s to treat morning sickness in pregnant women, but it is now known to cause severe birth defects and is no longer used for this purpose.

The Most Common Cause of Mental Retardation in the United