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Updated: Jun 24, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Infant feeding and obesity at 11 years: prospective birth cohort study
Marilda Borges Neutzling1, Pedro Rodrigues Curi Hallal, Cora Luiza Pavin Araújo
1Post-Graduate Program in Epidemiology, Federal University of Pelotas, CEP. 96020-220, Pelotas, RS, Brazil. mneutzling@terra.com.br
Insights
This study found no significant long-term impact of breastfeeding duration or early solid food introduction on childhood overweight or obesity at age 11. Breastfeeding did not show a lasting effect on adolescent anthropometry in this Brazilian cohort.
Area of Science:
- Pediatrics
- Public Health
- Nutritional Epidemiology
Background:
- Early life feeding practices, including breastfeeding and the timing of solid food introduction, are crucial for child development.
- Understanding the long-term effects of these practices on adolescent weight status is important for public health initiatives.
- Previous research suggests a protective role of breastfeeding against overweight and obesity, but long-term evidence requires further investigation.
Purpose of the Study:
- To investigate the association between breastfeeding duration and the introduction of solid or semi-solid foods before four months of age with overweight and obesity at 11 years of age.
- To analyze the relationship between various breastfeeding indicators and anthropometric measurements in adolescence.
- To determine if early feeding practices influence long-term weight status in a Brazilian birth cohort.
Main Methods:
- A prospective, population-based birth cohort study involving 1,204 adolescents aged 11 years.
- Data collected included breastfeeding duration (any, exclusive/predominant), early introduction of solids (before 4 months), and feeding patterns at 4 months.
- Overweight and obesity were defined using Body Mass Index (BMI) and skinfold measurements according to National Center for Health Statistics (NCHS) criteria.
Main Results:
- The prevalence of overweight and obesity risk at 11 years was 23.2% and 11.6%, respectively.
- The lowest prevalence of both outcomes was observed in children breastfed for one to three months.
- No statistically significant association was found between breastfeeding indicators or early solid food introduction and anthropometric measures at 11 years, even after adjusting for confounding factors.
Conclusions:
- The study's findings do not support the hypothesis that breastfeeding confers a lasting protective effect on anthropometry in this population.
- Early introduction of solid foods before four months of age was not significantly associated with overweight or obesity at 11 years.
- Further research may be needed to explore other factors influencing long-term weight status in adolescence.
Objective:
To evaluate the association between breastfeeding duration, introduction of solid or semi-solid foods before four months of age and overweight/obesity at 11 years.
Methods:
Prospective population-based birth cohort study, including 1 204 adolescents aged 11 years who were born in Pelotas (Brazil), in 1993, and were previously interviewed at birth, six and 12 months of age. Five explanatory variables were used: duration of any breastfeeding, duration of exclusive or predominant breastfeeding, ever breastfeeding, introduction of solid or semi-solid foods before four months of age, and feeding pattern at four months of age. Risk of overweight was defined as body mass index (BMI) > or = 85(th) percentile, and obesity was defined as BMI > or = 85(th) percentile plus triceps and subscapular skinfolds > or = 90(th) percentile, using the National Center for Health Statistics curves.
Results:
The prevalence of risk of overweight and obesity at 11 years were 23.2% and 11.6%, respectively. The lowest prevalence of both outcomes was found among subjects who were breastfed for one to three months. However, tests for linear trend or heterogeneity did not result in a significant association between breastfeeding indicators and anthropometry at 11 years. Adjustment for sex, skin color, birth weight, maternal schooling, smoking during pregnancy and maternal pre-pregnancy BMI did not alter the findings.
Conclusions:
Our results do not support the hypothesis that breastfeeding has a long-term lasting effect on anthropometry in this population.
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