Systemic iron status and maternal pregnancy complications: a Mendelian randomization study.
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Publication Date
2022-06-13Journal Title
Int J Epidemiol
ISSN
0300-5771
Publisher
Oxford University Press (OUP)
Type
Article
This Version
AM
Metadata
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Rogne, T., Burgess, S., & Gill, D. (2022). Systemic iron status and maternal pregnancy complications: a Mendelian randomization study.. Int J Epidemiol https://doi.org/10.1093/ije/dyac037
Abstract
Iron deficiency is the most common nutritional deficiency worldwide, and is estimated to affect a quarter of the pregnant population.1 Low systemic iron levels have been associated with several maternal pregnancy complications, including infection and preeclampsia.2 However, these results from traditional observational studies may be affected by confounding. A systematic review of trials found that daily iron supplementation in pregnancy reduced iron deficiency anemia, but there was no clear effect on other maternal complications, which in large part may be due to low statistical power.3
To robustly evaluate whether systemic iron status affects risk of maternal pregnancy complications, we conducted a Mendelian randomization (MR) study. By leveraging genetic instruments for systemic iron status, the approach greatly reduced the risk of confounding and allowed for a large study sample.
Sponsorship
Wellcome Trust (204623/Z/16/Z)
Medical Research Council (MC_UU_00002/7)
Embargo Lift Date
2023-03-02
Identifiers
External DOI: https://doi.org/10.1093/ije/dyac037
This record's URL: https://www.repository.cam.ac.uk/handle/1810/333663
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