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Maternal gestational diabetes and childhood obesity at age 9-11: results of a multinational study
Pei Zhao1, Enqing Liu1, Yijuan Qiao1,2
1Tianjin Women's and Children's Health Center, Tianjin, China.
Insights
Maternal gestational diabetes mellitus (GDM) is linked to a higher risk of childhood obesity. This association, particularly for central obesity, persists even after accounting for maternal body mass index (BMI).
Area of Science:
- Global Public Health
- Pediatric Endocrinology
- Reproductive Health
Background:
- Gestational diabetes mellitus (GDM) affects maternal and child health outcomes.
- Childhood obesity is a growing global health concern with long-term implications.
Purpose of the Study:
- To investigate the association between maternal GDM and childhood obesity.
- To assess obesity, central obesity, and high body fat in children aged 9-11 years.
Main Methods:
- Multinational cross-sectional study of 4740 children (9-11 years).
- Maternal GDM diagnosed using ADA or WHO criteria.
- Objective measurements of child height, weight, waist circumference, and body fat.
- Multilevel modeling to analyze associations, adjusting for numerous covariates.
Main Results:
- Prevalence of maternal GDM was 4.3%; childhood obesity was 12.3%.
- Maternal GDM was associated with increased odds of childhood obesity (OR 1.53), central obesity (OR 1.73), and high body fat (OR 1.42).
- The association remained significant for central obesity after adjusting for maternal BMI, but not for overall obesity or high body fat.
Conclusions:
- Maternal GDM is associated with an increased risk of childhood obesity.
- The link between GDM and childhood obesity is partially mediated by maternal BMI.
- Central obesity showed a more robust association with maternal GDM independent of maternal BMI.
Aims/Hypothesis:
The aim of this study was to examine the association between maternal gestational diabetes mellitus (GDM) and childhood obesity at age 9-11 years in 12 countries around the world.
Methods:
A multinational cross-sectional study of 4740 children aged 9-11 years was conducted. Maternal GDM was diagnosed according to the ADA or WHO criteria. Height and waist circumference were measured using standardised methods. Weight and body fat were measured using a portable Tanita SC-240 Body Composition Analyzer. Multilevel modelling was used to account for the nested nature of the data.
Results:
The prevalence of reported maternal GDM was 4.3%. The overall prevalence of childhood obesity, central obesity and high body fat were 12.3%, 9.9% and 8.1%, respectively. The multivariable-adjusted (maternal age at delivery, education, infant feeding mode, gestational age, number of younger siblings, child unhealthy diet pattern scores, moderate-to-vigorous physical activity, sleeping time, sedentary time, sex and birthweight) odds ratios among children of GDM mothers compared with children of non-GDM mothers were 1.53 (95% CI 1.03, 2.27) for obesity, 1.73 (95% CI 1.14, 2.62) for central obesity and 1.42 (95% CI 0.90, 2.26) for high body fat. The positive association was still statistically significant for central obesity after additional adjustment for current maternal BMI but was no longer significant for obesity and high body fat.
Conclusions/Interpretation:
Maternal GDM was associated with increased odds of childhood obesity at 9-11 years old but this association was not fully independent of maternal BMI.
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