Folate metabolism and neural tube defects
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Updated: Nov 6, 2026

Modifying Levels of Maternal Dietary Folic Acid or Choline to Study the Impact of Deficiencies on Offspring Health Outcomes
Published on: June 28, 2024
Abstract:
Neural tube defects may due to a number of factors acting on a susceptible embryo. The most widely accepted is a lack of folic acid at a critical time of development. Studies in which folic acid supplements have been given are reviewed. The results of these support the policy of giving folic acid, starting before conception. The metabolism of folate and vitamin B12 is discussed, including specific metabolic disorders; although there is no evidence that these play any part in causing neural tube defects. The special problems that occur among women taking anti-epileptic drugs are also considered. There are slight differences in the recommendations that have been made for supplementation, and further studies are needed before there can be complete agreement.
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