Whether you're already expecting — or just planning to be — taking the right vitamins can help ensure a healthy baby. One of the most important for you and your baby is folic acid. Up to 70 percent of all neural tube defects (NTDs) — birth defects of the brain and spine — could be prevented if every woman of childbearing age took folic acid daily, according to the Centers for Disease Control and Prevention (CDC).

What is Folic Acid?
Folic acid is a member of the B-vitamin family. It occurs naturally in foods as folates, and is available in synthetic form in vitamin pills. Foods that contain folates include orange juice, green leafy vegetables, and beans. Fortified breakfast cereals, enriched grain products, and vitamins contain a synthetic form of folic acid. The synthetic form is more easily absorbed by your body than the natural form.

The Role of Folic Acid
While researchers don't know why folic acid helps prevent birth defects, it has been shown to decrease the risk of the most common NTDs: spina bifida (the leading cause of childhood paralysis) and anencephaly (a fatal condition in which an infant is born with a severely underdeveloped brain and skull).

Not only does folic acid combat these NTDs, but it may also help keep your baby from developing a heart defect, cleft lip, or cleft palate.

Additionally, a pregnant woman needs folic acid to help support the rapid growth of the placenta and fetus. The nutrient aids in baby's DNA production. Cell division and fetal growth can become impaired without it. One study found that women with folic acid deficiencies were two to three times more likely to have a premature baby or a baby of low birth weight than those who got enough of the vitamin.

Boost Your Intake
The March of Dimes, the CDC, and the Institute of Medicine recommend that all women consume at least 400 micrograms of the synthetic form a day, and that pregnant women consume 600 micrograms, either from a prenatal vitamin or multivitamin, or by consuming a fortified breakfast cereal that contains 400 micrograms of folic acid in one bowl.