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Folic acid is one of the B vitamins your body needs for good health. Getting enough of this vitamin prevents folic acid deficiency anemia. It also prevents certain birth defects.
The vitamin is also called folate, but there is a difference:
Most people just say "folic acid" for either form of this vitamin.
Most people can get the amount of folic acid they need by eating a well balanced diet.
65 mcg (micrograms)
Older children and adults
Over 13 years
Although the recommended amount of folic acid for all adults is 400 mcg a day, many doctors recommend higher amounts for women who are able to get pregnant. This is because folic acid plays a big role in preventing birth defects.
Women who don't get enough folic acid before and during pregnancy are more likely to have a child born with a birth defect, such as:
Women who are able to get pregnant3
400 mcg to 800 mcg
If you're breast-feeding, getting this extra folic acid will make sure that your baby gets the folic acid he or she needs to stay healthy.
Here's an odd fact: The man-made form of this vitamin is actually absorbed better by our bodies than the natural form is. So even if a woman eats a well balanced diet, she may not get the extra folic acid she needs to prevent birth defects unless she also takes a supplement.
It can be hard for women to get extra folic acid from food. So experts say that all women who are able to get pregnant should take a daily supplement that has 400 to 800 mcg of folic acid.3
Some women need even higher doses.
Follow your doctor's advice about how to get higher amounts of folic acid. Don't just take more multivitamins. You could get too much of the other substances that are in the multivitamin.
Even if you aren't planning to get pregnant, your doctor may recommend a daily supplement.
Many pregnancies aren't planned. And the birth defects that folic acid can prevent start to form in the first 6 weeks of pregnancy. This is often before a woman even knows she's pregnant.
So you can see why getting enough daily folic acid—even before you get pregnant—is so important. If you are pregnant and you have not been taking a vitamin containing folic acid, begin taking it right away.
Foods high in folate include liver, citrus fruits, dark greens like spinach, and fortified breakfast cereals and breads. Read food labels to see how much folate the food contains.
Fortified (with 100% of daily requirement) breakfast cereal
400 mcg or more
Beef liver, cooked
Frozen peas, boiled
Enriched white rice, cooked
Frozen broccoli, cooked
Enriched macaroni, cooked
Folic acid tips
Food and Nutrition Board, Institute of Medicine (2011). Dietary reference intakes (DRIs): Recommended dietary allowances and adequate intakes, elements. Available online: http://iom.edu/Activities/Nutrition/SummaryDRIs/~/media/Files/Activity%20Files/Nutrition/DRIs/New%20Material/2_%20RDA%20and%20AI%20Values_Vitamin%20and%20Elements.pdf.
Food and Nutrition Board, Institute of Medicine (2012). Dietary reference intakes (DRIs): Recommended dietary allowances and adequate intakes, vitamins. In LK Mahan et al., eds., Krause's Food and the Nutrition Care Process, 13th ed. St Louis: Saunders.
U.S. Preventive Services Task Force (2009). Folic acid to prevent neural tube defects. Available online:
Cunningham FG, et al. (2010). Multifetal gestation. In Williams Obstetrics, 23rd ed., pp. 859–889. New York: McGraw-Hill.
Cunningham FG, et al. (2010). Prenatal care. In
Williams Obstetrics, 23rd ed., pp. 189–214. New York:
Office of Dietary Supplements, National Institutes of Health (2010). Dietary Supplement Fact Sheet: Folate. Available online: http://ods.od.nih.gov/factsheets/Folate-HealthProfessional.
Other Works Consulted
Finer LB, Henshaw SK (2006). Disparities in rates of unintended pregnancy in the United States, 1994 and 2001. Perspectives on Sexual and Reproductive Health, 38(2): 90–96.
U.S. Department of Agriculture, Agricultural Research Service (2012). Nutrient data laboratory. USDA National Nutrient Database for Standard Reference, Release 25. Available online: http://ndb.nal.usda.gov.
December 18, 2012
E. Gregory Thompson, MD - Internal Medicine & Joseph O'Donnell, MD - Hematology, Oncology
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