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Maternal sleep duration and neonate birth weight: A population-based cohort study
Marcella Marinelli1,2,3, Anne-Elie Carsin1,2, Michelle C Turner1,2,4
1Barcelona Institute for Global Health (ISGlobal), Barcelona, Spain.
Summary
Maternal sleep duration impacts newborn weight. Sleeping too much (over 9 hours) before and during pregnancy was linked to lower birth weight in newborns. Excessive sleep may negatively affect fetal development.
Area of Science:
- Reproductive Health
- Perinatal Epidemiology
- Maternal-Fetal Medicine
Background:
- Maternal sleep duration is a key indicator of health.
- Understanding sleep's impact on fetal development is crucial for perinatal care.
Purpose of the Study:
- To investigate the association between maternal sleep duration and neonate birth weight.
- To explore potential dose-response relationships in sleep duration and birth outcomes.
Main Methods:
- A Spanish birth cohort study (INMA project) included 2536 mother-neonate pairs.
- Maternal sleep duration was assessed via questionnaires before and during pregnancy.
- Neonate birth weight was standardized to 40 weeks of gestation.
Main Results:
- Mothers sleeping <7 hours/day showed a trend towards increased birth weight with more sleep (minimally adjusted).
- Mothers sleeping >9 hours/day experienced decreased birth weight with increased sleep duration (P=0.001).
- Associations were consistent after adjusting for confounders and observed during the second trimester.
Conclusions:
- Maternal sleep duration and neonate birth weight exhibit an inverse U-shaped relationship.
- Excessive maternal sleep duration (>9 hours) may be detrimental to fetal growth, impacting birth weight.
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