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Pregnancy night shifts associated with higher risk of developmental abnormalities in children (opens in a new tab)
news-medical.net · 2026-10-27
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Pregnancy night shifts associated with higher risk of developmental abnormalities in children
news-medical.net · 2026-10-27
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Source study identified.
A source study was identified, but the study's evidence could not be prepared for claim assessment. No claim verdicts are available.
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Maternal night shift patterns during pregnancy and offspring’s development at 4 years of age: the Japan Environment and Children’s Study
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Claim 1 of 5Not checkedWorking night shifts during pregnancy is linked to a heightened risk of neurodevelopmental abnormalities detected by screening in the child by age 4.View evidenceHide evidence
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Claim 2 of 5Not checkedNightly prenatal sleep length during pregnancy may modify the observed association between night shift work and child neurodevelopmental abnormalities.View evidenceHide evidence
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Claim 3 of 5Not checkedCompared with mothers who did not work night shifts, children of mothers who continued night shifts during pregnancy had higher risks of developmental abnormalities in communication, fine motor skills, and personal-social functioning, while discontinued night shifts were associated with higher risk only in fine motor skills.View evidenceHide evidence
As stated29% higher risk in communication, 34% higher risk in fine motor skills, and 31% higher risk in personal-social functioning; 24% higher risk in fine motor skills for discontinued night shifts
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A source study was identified, but the evidence comparison for this claim was not completed. No verdict has been assigned.
Claim 4 of 5Not checkedAn exploratory analysis found that prenatal sleep duration of 10 hours or more was associated with an 80% heightened risk of abnormalities in any of the five screening domains compared with 6 to 9 hours of sleep.View evidenceHide evidence
As stated80% heightened risk
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A source study was identified, but the evidence comparison for this claim was not completed. No verdict has been assigned.
Claim 5 of 5Not checkedThe researchers say the study is observational and cannot establish cause and effect, and they note they could not account for several possible confounders such as shift rotation, chronotype, workload, light exposure, or timing of night shift discontinuation.View evidenceHide evidence
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Maternal night shift patterns during pregnancy and offspring’s development at 4 years of age: the Japan Environment and Children’s Study
Occupational and Environmental Medicine · 2026
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Papers considered
The selected paper, plus nearby candidates.
Crossref, PubMed, Europe PMC · 16 candidate papers
Maternal night shift patterns during pregnancy and offspring’s development at 4 years of age: the Japan Environment and Children’s Study
Occupational and Environmental Medicine · 2026 · Crossref
The contribution of circadian, sleep and hormonal rhythms to pregnancy outcomes: an opportunity for improved management of women during pregnancy.
Reproduction (Cambridge, England) · 2026 · PubMed
Effect of delay at 12 months of age on developmental status at 48 months of age determined using the ages and stages questionnaire: The Japan environment and children's study
Revue D'épidémiologie Et De Santé Publique · 2018 · Crossref
Cohort profile: The Japan Environment and Children's Study.
2026 · Europe PMC
Night shift work as a potential risk factor for hypertensive disorders of pregnancy: the Japan environment and children's study.
International Archives of Occupational and Environmental Health · 2026 · PubMed, Crossref
Double-blind, randomised, placebo-controlled trial to evaluate the effectiveness of late gestation oral melatonin supplementation in reducing induction of labour rates in nulliparous women: the MyTIME study protocol.
2025 · Europe PMC
And 10 more candidates considered.