In recent years, there has been a push from organizations like the March of Dimes and the Centers for Disease Control urging women of childbearing age to make sure they get the recommended daily allowance (RDA) of folic acid, also known as vitamin B9. Women who are actively trying to get pregnant may want to consider a separate folic acid supplement. Folic acid remains important throughout pregnancy and prenatal vitamins will provide a good supply. Studies have shown that adequate levels of folic acid in pregnant women can drastically lower the chances of their babies developing neural tube defects. The neural tube is the part of an embryo and fetus that is the core of the central nervous system, it later develops into the brain and spinal cord.
Neural tube defects develop early in the first trimester, during the first weeks of pregnancy. Many women do not yet know they are pregnant during this time, so waiting until they find out they are pregnant to begin taking folic acid will not have the desired effect. One of the more commonly occurring neural tube defects is spina bifida, when babies are born with part of their spinal cord exposed because the neural tube did not...