Whats folic acid and why do I need it in pregnancy?

Folic acid. Folic acid is found in many foods and is a part of the b-complex group of vitamins. Deficiency can cause several problems but the severe ones occur with pregnancy and can cause birth defects in the developing fetus. Mothers who take adequate Folic Acid and other supplements while they are pregnant have babies that have a much lower rate of certain birth defects.