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Feeding Mode Is Associated with Infant Night Sleep Trajectories During the First Postnatal Year
Magdalena Olson1,2, Li Liu1,3, Elizabeth Reifsnider4
1College of Health Solutions, Arizona State University, Phoenix, AZ 85004, USA.
Nutrients
|June 12, 2026
Summary
Breastfeeding is linked to longer infant night sleep duration, while bedsharing and night-weaning showed no significant association. This highlights breastfeeding
Area of Science:
- Pediatrics
- Sleep Medicine
- Infant Nutrition
Background:
- Infant feeding practices and sleep arrangements significantly influence infant development.
- Short sleep duration and formula feeding are risk factors for childhood obesity.
- The dynamic nature of infant feeding and sleep requires further investigation into their impact on sleep duration.
Purpose of the Study:
- To examine the association between infant feeding mode and parent-reported night sleep duration.
- To evaluate the influence of night-weaning and bedsharing on infant sleep duration.
- To provide evidence-based recommendations for supporting breastfeeding and addressing infant sleep concerns.
Main Methods:
- Longitudinal study of 193 infants from birth to 52 weeks in the Phoenix Metropolitan Area.
- Sleep and feeding questionnaires administered at multiple postnatal visits.
- Multilevel growth modeling used to analyze infant night sleep duration trajectories based on feeding mode, night-weaning, and bedsharing.
Main Results:
- Infant night sleep duration exhibited a curvilinear trajectory, increasing with age but decelerating over time.
- Higher levels of breast milk consumption were associated with longer infant night sleep duration.
- Bedsharing and night-weaning were not significantly associated with infant night sleep duration.
Conclusions:
- Breastfeeding is positively associated with longer infant night sleep duration.
- Bedsharing, despite its correlation with breastfeeding, did not show a significant association with sleep duration.
- Findings underscore the importance of breastfeeding for infant sleep duration and overall healthy development.
Keywords:
bedsharingbreastfeedingdynamic feeding modeformula feedinginfant developmentinfant night sleepmixed feedingnight sleep trajectoriesnight-weaningMore Related Videos
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