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  1. Olson, Beth H. PhD
  2. Keast, Debra R. MS
  3. Song, Won O. PhD, MPH, RD
  4. Morris, Diane H. PhD, RD


Folic acid fortification is an effective strategy for improving the folate status of women in their childbearing years and for the primary prevention of pregnancies affected by neural tube defects. However, the optimal fortification level has not been identified, and some populations may be at risk of excessive folic acid intakes.