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Folic acid supplementation--when and how

R H Schwarz¹, R B Johnston

¹March of Dimes Birth Defects Foundation, White Plains, New York, USA.

Obstetrics and Gynecology

|November 1, 1996

Summary

Folic acid supplementation prevents neural tube defects. Daily multivitamins are recommended for women of childbearing age to ensure adequate intake, as diet alone is insufficient.

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Area of Science:

Obstetrics and Gynecology
Public Health Nutrition
Preventive Medicine

Background:

Neural tube defects (NTDs) are serious birth defects.
Periconceptional folic acid intake significantly reduces NTD incidence.
Dietary intake alone often falls short of recommended levels.

Purpose of the Study:

To emphasize the importance of folic acid for preventing NTDs.
To recommend daily multivitamin use for women of childbearing potential.
To address concerns regarding masking pernicious anemia.

Main Methods:

Literature review on folic acid efficacy in NTD prevention.
Analysis of dietary intake versus recommended folic acid levels.
Assessment of risks associated with folic acid supplementation.

Main Results:

400 micrograms of folic acid can prevent 50-70% of NTDs.
Achieving adequate intake through diet alone is challenging.
Daily multivitamins are a reliable method for consistent intake.

Conclusions:

Universal recommendation of daily multivitamins with folic acid for women of childbearing potential is crucial.
Healthcare providers should educate patients on folic acid importance.
Masking megaloblastic anemia from pernicious anemia is unlikely at recommended supplementation levels.

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