Early pregnancy maternal vitamin D concentrations and risk of gestational diabetes mellitus
- PMID: 25808081
- PMCID: PMC4400239
- DOI: 10.1111/ppe.12182
Early pregnancy maternal vitamin D concentrations and risk of gestational diabetes mellitus
Abstract
Background: While associations of vitamin D deficiency with type 2 diabetes have been well demonstrated, investigations of vitamin D and risk of gestational diabetes mellitus (GDM) reported inconsistent findings. We examined associations of vitamin D status with GDM.
Methods: In a nested case-cohort study (135 GDM cases and 517 non-GDM controls), we measured maternal serum vitamin D status (total 25[OH]D and 25[OH]D3 ) in early pregnancy (16 weeks on average) using liquid chromatography-tandem mass spectroscopy. GDM was diagnosed according to the American Diabetes Association guidelines. We calculated adjusted odds ratios and 95% confidence intervals (CIs) using logistic regression models.
Results: GDM cases had lower mean total 25[OH]D (27.3 vs. 29.3 ng/mL) and 25[OH]D3 (23.9 vs. 26.7 ng/mL) concentrations compared with women who did not develop GDM (both P-values < 0.05). Overall, 25[OH]D3 concentrations, but not total 25[OH]D concentrations, were significantly associated with GDM risk. A 5-ng/mL increase in 25[OH]D3 concentration was associated with a 14% decrease in GDM risk (P-value = 0.02). Women in the lowest quartile for 25[OH]D3 concentration had a twofold [95% CI 1.15, 3.58] higher risk of GDM compared with women in the highest quartile (P-value for trend < 0.05).
Conclusions: Early pregnancy vitamin D status, particularly 25[OH]D3 , is inversely associated with GDM risk.
Keywords: case-cohort study; gestational diabetes; pregnancy; vitamin D.
© 2015 John Wiley & Sons Ltd.
Comment in
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Early pregnancy maternal vitamin D concentrations and risk of gestational diabetes mellitus.Paediatr Perinat Epidemiol. 2015 May;29(3):196-9. doi: 10.1111/ppe.12187. Paediatr Perinat Epidemiol. 2015. PMID: 25873289 No abstract available.
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- Holick MF, Binkley NC, Bischoff-Ferrari HA, Gordon CM, Hanley DA, Heany RP, et al. Evaluation, treatment, and prevention of vitamin D deficiency: An endocrine society clinical practice guideline. Journal of Clinical Endocrinology and Metabolism. 2011;96:1911–1930. - PubMed
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- Ozfirat Z, Chowdhury TA. Vitamin D deficiency and type 2 diabetes. Postgraduate Medical Journal. 2010;86:18–25. - PubMed
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