Reduces birth defects & is necessary for the development of the brain &nerves of the fetus.Taking folic acid before and during the first months of pregnancy is essential because it reduces birth defects and is necessary for the development of the brain and nerves of the fetus. However, folic acid is not only beneficial during pregnancy. Folic acid lowers homocysteine ​​levels, which reduces the risk of heart disease. Also, folic acid deficiency causes anemia, fatigue and hair loss.