Work

Breastfeeding duration and maternal weight change through adulthood in a population-based cohort study

Year: 2025

Type: article

Abstract: BACKGROUND: Weight retention postpartum can increase long-term risk of maternal overweight and obesity. In theory, breastfeeding may facilitate postpartum weight loss, but its association with maternal weight change, especially long-term, remains uncertain. OBJECTIVES: The aim of this study was to investigate the association between breastfeeding duration and maternal weight change through adulthood emphasizing possible variations based on early adulthood BMI and the time of childbirth during the 1940s through the 1990s. METHODS: Women (n = 172,472) in the Norwegian Women and Health Study, born 1927 to 1965, completed ≤3 questionnaires (Q1-Q3) between 1991 and 2014. A linear mixed model was applied to assess the association between BMI change from age 18 y in relation to mean breastfeeding duration per child (0, >0 to <3, 3 to <6, 6 to <9, 9 to <12, 12 to <15, ≥15 mo), including a 3-way interaction with categories of BMI at age 18 y and time period of first birth. RESULTS: (95% CI: -2.93, -1.30), compared with >0 to <3 mo. CONCLUSIONS: We found a significant association between longer breastfeeding duration per child and lower maternal weight gain through adulthood, which was particularly pronounced among mothers with overweight or obesity at age 18 y and among mothers who had their first child ≥1980.

Source: American Journal of Clinical Nutrition

DOI: 10.1016/j.ajcnut.2025.101134

Authors: Thorbjørn B Skammelsrud, Anette Hjartåker, Sofia Klingberg, Hilde K Brekke

Institutions: University of Oslo, University of Gothenburg

Language: English

Topic: Breastfeeding Practices and Influences

Subfield: Epidemiology

Field: Medicine

Domain: Health Sciences

SDGs: Good health and well-being, Zero hunger

Open Access status: hybrid

Estimated APC paid: $5,200