Folic acid is very important for all women who may become pregnant. Adequate folate intake during the periconceptual period, the time just before and just after a woman becomes pregnant, protects against neural tube defects . Neural tube defects result in malformations of the spine (spina bifida), skull, and brain (anencephaly) . The risk of neural tube defects is significantly reduced when supplemental folic acid is consumed in addition to a healthful diet prior to and during the first month following conception [10,22-23]. Since January 1, 1998, when the folate food fortification program took effect, data suggest that there has been a significant reduction in neural tube birth defects . Women who could become pregnant are advised to eat foods fortified with folic acid or take a folic acid supplement in addition to eating folate-rich foods to reduce the risk of some serious birth defects. For this population, researchers recommend a daily intake of 400 ?g of synthetic folic acid per day from fortified foods and/or dietary supplements .
Who else may need extra folic acid to prevent a deficiency?
People who abuse alcohol, those taking medications that may interfere with the action of folate (including, but not limited to those listed above), individuals diagnosed with anemia from folate deficiency, and those with malabsorption, liver disease, or who are receiving kidney dialysis treatment may benefit from a folic acid supplement.
Folate deficiency has been observed in alcoholics. A 1997 review of the nutritional status of chronic alcoholics found low folate status in more than 50% of those surveyed . Alcohol interferes with the absorption of folate and increases the amount of folate the kidney gets rid of. In addition, many people who abuse alcohol have poor quality diets that do not provide the recommended intake of folate . Increasing folate intake through diet, or folic acid intake through fortified foods or supplements, may be beneficial to the health of alcoholics.
Anti-convulsant medications such as dilantin increase the need for folate [26-27]. Anyone taking anti-convulsants and other medications that interfere with the body’s ability to use folate should consult with a medical doctor about the need to take a folic acid supplement [28-30].
Anemia is a condition that occurs when there is insufficient hemoglobin in red blood cells to carry enough oxygen to cells and tissues. It can result from a wide variety of medical problems, including folate deficiency. With folate deficiency, your body may make large red blood cells that do not contain adequate hemoglobin, the substance in red blood cells that carries oxygen to your body’s cells . Your physician can determine whether an anemia is associated with folate deficiency and whether supplemental folic acid is indicated.
Several medical conditions increase the risk of folic acid deficiency. Liver disease and kidney dialysis increase the loss of folic acid. Malabsorption can prevent your body from using folate in food. Medical doctors treating individuals with these disorders will evaluate the need for a folic acid supplement .