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Prenatal vitamins: Why they matter, how to choose

Why are prenatal vitamins important?

During pregnancy, you need more folic acid and iron than usual. Here's why:

  • Folic acid helps prevent neural tube defects. These defects are serious abnormalities of the fetal brain and spinal cord. Ideally, you'll begin taking extra folic acid at least 3 months before you become pregnant.
  • Iron supports the development of the placenta and fetus. Iron helps your body make blood to supply oxygen to the fetus. Iron also helps prevent anemia, a condition in which blood has a low number of healthy red blood cells.