Journal
JOURNAL OF INTERNAL MEDICINE
Volume 278, Issue 2, Pages 219-226Publisher
WILEY
DOI: 10.1111/joim.12354
Keywords
childhood growth; foetal growth; glucose; obesity; type 2 diabetes
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Funding
- Novo Nordisk Fonden [NNF12OC1016374] Funding Source: researchfish
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ObjectiveType 2 diabetes (T2D) is a heterogeneous disorder. The aim of this study was to examine the trajectories of childhood growth associated with T2D. Design and subjectsA total of 13345 individuals born in Helsinki, Finland between 1934 and 1944 were included in the study. The participants' growth had been recorded in detail during childhood, and 11.7% (n=1558) had been diagnosed with T2D. We divided the cohort around the median body mass index (BMI) at 11years. Body composition and glucose tolerance were assessed in a clinical subsample (n=2003) in adulthood. ResultsTwo pathways of growth were associated with T2D. Both began with low weight and BMI at birth. In one, persistent low BMI through infancy was followed by a rapid increase in BMI in childhood. Amongst individuals with a BMI at 11years above the median value, the odds ratio for T2D associated with a one z-score increase in BMI between 2 and 11years was 1.31 (95% confidence interval 1.21-1.42, P<0.001). In the other pathway, low BMI at birth, accompanied by short length at birth, was followed by low BMI in childhood. Most women who developed diabetes followed this trajectory; they developed T2D at a lower BMI and lower fat percentage than women with a BMI above the median at 11years of age. ConclusionsTwo pathways of early growth trigger T2D. Low fat deposition leading to thinness at birth and during infancy results in fat acquisition during childhood. Reduced linear growth leading to short length at birth is associated with lower body fat percentage in adulthood but increased risk of developing diabetes.
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