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the claim

Night shift work during pregnancy increases the risk of miscarriage.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 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 night shift work during pregnancy increases the risk of miscarriage?

Yes. A 2019 systematic review and meta-analysis of 62 observational studies found fixed night shift work during pregnancy was associated with increased odds of miscarriage (OR 1.23), and a 2021 review reports a dose-response pattern between number of night shifts and miscarriage risk. The CDC and a Scandinavian Journal of Work editorial also note a possible or moderately increased miscarriage risk from night work, though with hedged or limited evidence.

Verdict: SUPPORTED · 4 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 · 4
[Night work and pregnancy-related complications].
2021
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[Night work and pregnancy-related complications].. (2021). pubmed.ncbi.nlm.nih.gov. https://pubmed.ncbi.nlm.nih.gov/33317690

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More for · 3
The impact of occupational shift work and working hours during pregnancy on health outcomes: a systematic review and meta-analysis.
2019
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Cai, C., Vandermeer, B., Khurana, R., Nerenberg, K., Featherstone, R., Sebastianski, M., & Davenport, M. (2019). The impact of occupational shift work and working hours during pregnancy on health outcomes: a systematic review and meta-analysis.. doi.org. https://doi.org/10.1097/01.aoa.0000693660.86124.b7

About Work Schedules and Reproductive Health | Reproductive Health | CDC
Get citation
About Work Schedules and Reproductive Health | Reproductive Health | CDC. (n.d.). cdc.gov. https://www.cdc.gov/niosh/reproductive-health/prevention/work-schedules.html

Physical workload--a risk factor for miscarriage?
2013
Get citation
Lindbohm, M. (2013). Physical workload--a risk factor for miscarriage?. doi.org. https://doi.org/10.5271/sjweh.3369

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