Predictors of overweight during childhood in offspring of parents with type 1 diabetes

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Abstract

OBJECTIVE - To study which perinatal factors affect the risk of childhood overweight in offspring with a first-degree relative (FDR) with type 1 diabetes and to determine whether maternal diabetes is an independent contributor to overweight risk. RESEARCH DESIGN AND METHODS - Data on a child's weight and height were collected at age 2, 5, and 8 years from 1,214 children participating in the prospective BABYDIAB study. All children had an FDR with type 1 diabetes, including 783 whose mothers had type 1 diabetes. Overweight was defined as BMI percentile ≥90. Data on birth size, breast-feeding, maternal age, and smoking during pregnancy were collected by questionnaires. Risk estimates were calculated by logistic regression analyses. RESULTS - Breastfeeding duration and birth size both contributed significantly to overweight risk at all age intervals. Full breast-feeding >4 months or any breast-feeding >6 months reduced risk of overweight (aged 8 years: odds ratio 0.3 [95% CI 0.2- 0.7], P = 0.004; and 0.3 [0.1- 0.6], P = 0.001). Large-for-gestational-age status increased risk of overweight (aged 8 years: 2.4 [1.4-4.3], P = 0.002). Importantly, no evidence was found for an independent contribution of maternal type 1 diabetes to childhood overweight. CONCLUSIONS - Our findings indicate that maternal type 1 diabetes is not an independent risk factor for overweight during childhood in offspring of type 1 diabetic mothers but that factors associated with maternal type 1 diabetes, such as short breast-feeding duration and high birth size, predispose children to overweight during childhood. © 2009 by the American Diabetes Association.

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Hummel, S., Pflüger, M., Kreichauf, S., Hummel, M., & Ziegler, A. G. (2009). Predictors of overweight during childhood in offspring of parents with type 1 diabetes. Diabetes Care, 32(5), 921–925. https://doi.org/10.2337/dc08-1943

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