ArticlePediatric obesity2026
Longer Breastfeeding Is Associated With Healthier Body Mass Index Trajectories and Lower Risk of Overweight and Obesity in Youth Aged 9-12 Years.
Article in Pediatric obesity, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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Who cites it
2 citing papers in PubMed.
- Breastfeeding and dietary habits in childhood and adolescence: the PASOS study.International breastfeeding journal · 2026Observational
- Longer Breastfeeding Is Associated With Healthier Body Mass Index Trajectories and Lower Risk of Overweight and Obesity in Youth Aged 9-12 Years.Pediatric obesity · 2026Article
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Authors and funding
5 authors.
Funding
Abstract
backgroundThe association between breastfeeding and adolescent obesity remains unclear because most previous studies included youth with obesity. We explored these associations from ages 9 to 12 amongst initially healthy weight youth.
methodsThe analytic sample included 4161 youth (10 586 observations across three assessments; all healthy weight at baseline; 50.7% female; 52% breastfed more than 6 months) from the Adolescent Brain Cognitive Development (ABCD) Study. Linear mixed-effects models examined breastfeeding × age × sex and breastfeeding × puberty × sex interactions on BMI trajectories (kg/m
resultsThree-way interactions were not significant. Significant breastfeeding × age interactions (β = -0.005, p < 0.001) indicated that breastfed youth exhibited lower BMI trajectories, particularly when breastfed for more than 6 months (β = -0.006, p < 0.001). Significant breastfeeding × puberty interactions showed lower BMI trajectories across pubertal stages amongst breastfed youth (β = -0.06, p = 0.017), observed only in boys and especially in those breastfed beyond 6 months (β = -0.11, p = 0.005). Breastfeeding was associated with a reduced unhealthy weight risk at ages 11-12 (RR = 0.78, p = 0.002), exclusively in boys and amongst those breastfed more than 6 months (RR = 0.52, p < 0.001). No associations were found in girls.
conclusionAmongst initially healthy weight youth, breastfeeding, especially beyond 6 months, was associated with healthier BMI trajectories and lower unhealthy weight risk in boys. Although these sex-specific patterns warrant further research, our findings suggest that the associations between breastfeeding and body weight development extend into adolescence.
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