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the claim

Vitamin D deficiency reduces fertility in women of reproductive age.

the verdict
INSUFFICIENT LEANING
Recorded sources
6 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that vitamin D deficiency reduces fertility in women of reproductive age?

Unclear. Several reviews and cohort studies report an association between low vitamin D status and reduced fertility or miscarriage, but these are observational, subgroup-limited, and do not establish that deficiency causes reduced fertility in women of reproductive age generally.

Verdict: PARTIAL LEAN · 6 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 6
Management of vitamin D deficiency and hypothyroidism in pre-pregnancy preparation of women with sexual dysfunction associated with endometriosis
2025
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Semeniuk, L. M., Yuzvenko, T., Kozachuk, Y., & Kryzhanovska, O. (2025). Management of vitamin D deficiency and hypothyroidism in pre-pregnancy preparation of women with sexual dysfunction associated with endometriosis. doi.org. https://doi.org/10.30978/cees-2025-1-13

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More for · 5
The Role of Vitamin D in Fertility and during Pregnancy and Lactation: A Review of Clinical Data
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The Role of Vitamin D in Fertility and during Pregnancy and Lactation: A Review of Clinical Data. (n.d.). cir.nii.ac.jp. https://doi.org/10.3390/ijerph15102241

Study the Vitamin D Levels in Infertile Females and Correlation of Vitamin D Deficiency with Anti-Mullerian Hormone Levels in Comparison to Fertile Females
2023
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Priyanka, Priya, M., & Bibha, K. (2023). Study the Vitamin D Levels in Infertile Females and Correlation of Vitamin D Deficiency with Anti-Mullerian Hormone Levels in Comparison to Fertile Females. zenodo.org. https://doi.org/10.5281/zenodo.11528924

Vitamin D: Before, during and after Pregnancy: Effect on Neonates and Children
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Vitamin D: Before, during and after Pregnancy: Effect on Neonates and Children. (n.d.). cir.nii.ac.jp. https://doi.org/10.3390/nu14091900

The modern strategies of clinical management of vitamin D deficiency in practices of the obstetrician gynecologist
2018
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Булавенко, О. В., Татарчук, Т. Ф., & Коньков, Д. Г. (2018). The modern strategies of clinical management of vitamin D deficiency in practices of the obstetrician gynecologist. zenodo.org. https://doi.org/10.18370/2309-4117.2018.39.38-44

Vitamin D and miscarriage: a systematic review and meta-analysis.
2022
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Tamblyn, J. A., Pilarski, N. S. P., Markland, A. D., Marson, E. J., Devall, A., Hewison, M., Morris, R. K., & Coomarasamy, A. (2022). Vitamin D and miscarriage: a systematic review and meta-analysis.. doi.org. https://doi.org/10.1016/j.fertnstert.2022.04.017

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