HINT: Each year in the U. S. about 3,000 pregnancies are affected by a defect of the spine (spina bifida) and or brain (anencephaly), also known as NTDs (neural tube defects). There are approximately 60 million women of childbearing age in the United States. Any woman who is capable of becoming pregnant could have a pregnancy affected by a neural tube defect. It is not possible to predict which women will have a pregnancy affected by an NTD. Ninety-five percent of women with NTD-affected pregnancies have no personal or family history of NTDs.


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