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Associations between 25 hydroxyvitamin D concentration and spontaneous abortion.
Hongping Zhang1, Xingru Ding2, Xianqing Hu1
1Department of Obstetrics and Gynecology, Wenzhou People's Hospital, Wenzhou Maternal and Child Health Care Hospital, The Third Clinical Institute Affiliated to Wenzhou Medical University, The Third Affiliated Hospital of Shanghai University, Wenzhou, China.
BMC Public Health
|July 11, 2024
Summary
Higher vitamin D levels may reduce the risk of spontaneous abortion. This study used Mendelian randomization and a retrospective analysis to investigate the link between vitamin D (25(OH)D) and pregnancy loss.
Area of Science:
- Reproductive Health
- Nutritional Epidemiology
- Genetic Epidemiology
Background:
- Spontaneous abortion is a common pregnancy complication with significant physical and psychological impacts.
- Vitamin D's role in reproductive health is suggested, but its causal effect on abortion risk remains unclear.
Purpose of the Study:
- To investigate the potential causal relationship between serum 25 hydroxyvitamin D [25(OH)D] concentration and the risk of spontaneous abortion.
- To systematically assess this association using a two-sample Mendelian randomization analysis.
Main Methods:
- A two-sample Mendelian randomization (MR) analysis utilized GWAS summary data for 25(OH)D (exposure) and spontaneous abortion (outcome).
- A retrospective study was conducted to corroborate the findings from the MR analysis.
Main Results:
- Mendelian randomization estimates suggested a potential protective role of higher 25(OH)D levels against spontaneous abortion, although not statistically significant.
- The retrospective study supported these findings, indicating a protective role for vitamin D, with a P-value close to statistical significance (P=0.053).
Conclusions:
- The study suggests that increased serum 25(OH)D concentration may play a protective role in reducing the risk of spontaneous abortion.
- Further large-scale prospective studies and randomized controlled trials are warranted to definitively establish the causal link between vitamin D and abortion risk.
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