Spina bifida occurs when the lower bones of the back and spinal cord do not develop properly. Eighty to ninety percent of babies born with spina bifida live, but they often suffer from paralysis of the legs and loss of control of the bowels and bladder.
Anencephaly is a fatal condition in which the upper end of the neural tube does not close. The brain does not fully develop. Often, pregnancies affected by anencephaly result in a miscarriage, those infants who are born alive die shortly after birth.
Anyone can have a baby with a neural tube defect. Each year about 4,000 pregnancies are affected by neural tube defects. At least HALF of these could be prevented by women taking Folic Acid BEFORE they get pregnant!
http://www.cdc.gov/doc.do/id/0900f3ec8000d558
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