Folic acid participates in the synthesis of DNA and RNA in cells, playing a crucial role in cell proliferation, which is why it is particularly important for fetal development. It has now been documented that taking 400μg of folic acid during the first trimester of pregnancy is necessary to prevent neural tube defects. Folic acid is known to play an important role in regulating levels of homocysteine, a compound with a chemical structure similar to an amino acid, which is involved in damage to the vascular endothelium and which can later lead to the formation of atherosclerotic plaques. It is a water-soluble vitamin that is not stored for a long time in the body, which makes it necessary to obtain it from green vegetables and whole grains. Modern methods of food storage and cooking lead to a reduction in folate levels in food, which is reflected in the fact that 47% of women do not consume the minimum daily intake of 200μg/day. Bioavailability studies show that folic acid supplements are easily absorbed and are an easy and reliable way to prevent nutritional deficiencies.