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Infant Breastfeeding and Kidney Function in School-Aged Children
Kozeta Miliku1, Trudy Voortman2, Hanneke Bakker1
1The Generation R Study Group, Erasmus MC, University Medical Center, Rotterdam, the Netherlands; Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, the Netherlands; Department of Pediatrics, Erasmus MC, University Medical Center, Rotterdam, the Netherlands.
Breastfeeding is linked to better kidney development in children. Longer and exclusive breastfeeding is associated with larger kidney volume and improved kidney function (eGFR) in school-aged children.
Area of Science:
- Pediatric Nephrology
- Nutritional Epidemiology
- Life Course Studies
Background:
- Early life nutrition significantly impacts long-term kidney health.
- Understanding the effects of infant feeding practices on kidney development is crucial.
Purpose of the Study:
- To investigate the association between breastfeeding (duration, exclusivity) and age of solid food introduction with kidney outcomes at school age.
- To assess kidney volume, estimated glomerular filtration rate (eGFR), and microalbuminuria in relation to early feeding patterns.
Main Methods:
- Prospective cohort study of 5,043 children in the Netherlands, from fetal life onward.
- Infant feeding data collected prospectively via questionnaires.
- Kidney outcomes (volume, eGFR, microalbuminuria) measured at a median age of 6.0 years.
Main Results:
- Never-breastfed children had smaller kidney volumes and lower eGFR compared to ever-breastfed children.
- Shorter breastfeeding duration correlated with smaller kidney volume and increased microalbuminuria risk.
- Exclusive breastfeeding for 4 months was associated with better kidney outcomes than nonexclusive breastfeeding.
Conclusions:
- Breastfeeding is associated with beneficial subclinical kidney outcomes in childhood.
- Further research is warranted to determine if early nutrition influences adult kidney disease risk.
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