Journal
ANNALS OF THE NEW YORK ACADEMY OF SCIENCES
Volume 1414, Issue 1, Pages 59-71Publisher
WILEY
DOI: 10.1111/nyas.13499
Keywords
folic acid; safety; cancer; neural tube defects; folate
Categories
Funding
- National Institutes of Health [R37DK58144, R01HD059120]
- Bill & Melinda Gates Foundation
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There is a large body of literature demonstrating the efficacy of maternal folic acid intake in preventing birth defects, as well as investigations into potential adverse consequences of consuming folic acid above the upper intake level (UL). Recently, two authoritative bodies convened expert panels to assess risks from high intakes of folic acid: the U.S. National Toxicology Program and the UK Scientific Advisory Committee on Nutrition. Overall, the totality of the evidence examined by these panels, as well as studies published since the release of their reports, have not established risks for adverse consequences resulting from existing mandatory folic acid fortification programs that have been implemented in many countries. Current folic acid fortification programs have been shown to support public health in populations, and the exposure levels are informed by and adherent to the precautionary principle. Additional research is needed to assess the health effects of folic acid supplement use when the current upper limit for folic acid is exceeded.
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