What are Birth Defects?

Birth defects are structural or functional abnormalities present at birth that cause physical or mental disability. Some may be fatal.

Researchers have identified thousands of different birth defects. Currently, birth defects are the leading cause of death for infants during the first year of life.

The March of Dimes Birth Defects Foundation defines "birth defects" as:

To date, researchers have identified thousands of different birth defects.

Currently, birth defects rank as the leading cause of death for infants during the first year of life.

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