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The intestinal microbiota composition and weight development in children: the KOALA Birth Cohort Study


Scheepers, LEJM and Penders, J and Mbakwa, CA and Thijs, C and Mommers, M and Arts, ICW, The intestinal microbiota composition and weight development in children: the KOALA Birth Cohort Study, International Journal of Obesity, 39, (1) pp. 16-25. ISSN 0307-0565 (2015) [Refereed Article]

Copyright Statement

Copyright 2015 Macmillan Publishers Limited

DOI: doi:10.1038/ijo.2014.178


Objective: To investigate whether the intestinal microbiota composition in early infancy is associated with subsequent weight development in children.

Methods: Analyses were conducted within the KOALA Birth Cohort Study (n = 2834). This cohort originates from two recruitments groups: pregnant women with a conventional lifestyle (no selection based on lifestyle) and pregnant women recruited through alternative channels (organic shops, anthroposophic clinicians/midwives, Steiner schools and relevant magazines). From 909 one-month-old infants, fecal samples were collected and analyzed by quantitative PCR targeting bifidobacteria, Bacteroides fragilis group, Clostridium difficile, Escherichia coli, Lactobacilli and total bacteria counts. Between the ages of 1 and 10 years, parent-reported weight and height was collected at 7 time points. Age- and gender-standardized body mass index (BMI) z-scores were calculated. Data were analyzed using generalized estimating equation.

Results: Colonization with B. fragilis group was borderline significantly associated with a higher BMI z-score of 0.15 (95% confidence interval (CI): -0.02 to 0.31), in the conventional subcohort. After stratification for fiber intake (P(forinteraction) = 0.003), colonization with B. fragilis group was associated with a 0.34 higher BMI z-score among children with a low-fiber intake in this subcohort (95% CI: 0.17-0.53). Higher counts among colonized children were positively associated with BMI z-score only in children within the conventional subcohort and a high-fiber diet (BMI z-score 0.08; 95% CI: 0.01-0.14), but inversely associated in children with a low-fiber diet (BMI z-score -0.05; 95% CI: -0.10 to 0.00), and in children recruited through alternative channels (BMI z-score -0.10; 95% CI: -0.17 to -0.03). The other bacteria were not associated with BMI z-scores, regardless of subcohort.

Conclusion: Using a targeted approach, we conclude that the intestinal microbiota, particularly the B. fragilis group, is associated with childhood weight development. To identify the potential impact of additional bacterial taxa, further prospective studies applying an unconstrained in-depth characterization of the microbiota are needed.

Item Details

Item Type:Refereed Article
Keywords:microbiome, obesity, child, overweight, birth cohort
Research Division:Health Sciences
Research Group:Epidemiology
Research Field:Epidemiology not elsewhere classified
Objective Division:Health
Objective Group:Clinical health
Objective Field:Prevention of human diseases and conditions
UTAS Author:Scheepers, LEJM (Dr Lieke Scheepers)
ID Code:142397
Year Published:2015
Web of Science® Times Cited:70
Deposited By:Menzies Institute for Medical Research
Deposited On:2021-01-14
Last Modified:2021-02-16

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