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the claim
Folic acid, the synthetic form of vitamin B9, is absorbed more completely than the natural folate found in food.
the verdict
CONTESTED PARTIAL
Recorded sources
3 sources for · 2 against
Is it true that folic acid, the synthetic form of vitamin B9, is absorbed more completely than the natural folate found in food?
Partly. Some sources describe folic acid as a synthetic, easily bioavailable form used in supplements and fortification, while two duplicate reference items suggest natural folate is easily absorbed whereas folic acid requires a scarce enzyme. None directly measures or compares the completeness of absorption between synthetic folic acid and natural food folate.
Verdict: CONTESTED PARTIAL · 3 sources for, 2 against · Last checked
Evidence for · 3
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Ismail, S., Eljazzar, S., & Ganji, V. (2023). Intended and Unintended Benefits of Folic Acid Fortification—A Narrative Review. doi.org. https://doi.org/10.3390/foods12081612
Evidence against · 2
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Zaminpira, S. & Niknamian, S. (2017). Synthetic Folic Acid Supplementation during Pregnancy Increases the Risk of Neonatal Jaundice in Newborns. zenodo.org. https://doi.org/10.5281/zenodo.888045
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More for · 2
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Risk Assessment of Folic Acid in Food Supplements. (2015). hal.science. https://hal.science/hal-05580423v1
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Greenberg, J. A., Bell, S. J., Guan, Y., & Yu, Y. (2017). Folic acid supplementation and pregnancy: more than just neural tube defect prevention. doi.org. https://doi.org/10.18370/2309-4117.2017.34.57-63
More against · 1
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Zaminpira, S. (2016). Synthetic Folic Acid Supplementation during Pregnancy Increases the Risk of Neonatal Jaundice in Newborns. zenodo.org. https://doi.org/10.5281/zenodo.2622333
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