Longitudinal trajectories of BMI and cardiovascular disease risk: The National Longitudinal Study of Adolescent Health

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ObjectiveIn adulthood, excess BMI is associated with cardiovascular disease (CVD); it is unknown whether risk differs by BMI trajectories from adolescence to adulthood.Design and MethodsThe National Longitudinal Study of Adolescent Health, a nationally representative, longitudinal adolescent cohort (mean age: 16.9y) followed into adulthood (mean age: 29.0y) [n=13,643 individuals (40,929 observations)] was examined. Separate logistic regression models for diabetes, hypertension, and inflammation were used to examine odds of risk factors at given adult BMI according to varying BMI trajectories from adolescence to adulthood.ResultsCVD risk factor prevalence at follow-up ranged from 5.5% (diabetes) to 26.4% (hypertension) and 31.3% (inflammation); risk differed across BMI trajectories. For example, relative to men aged 27y (BMI=23 kg/m2 maintained over full study period), odds for diabetes were comparatively higher for men of the same age and BMI≈30 kg/m2 with ≈8 BMI unit gain between 15-20y (OR=2.35; 95% CI, 1.51, 3.66) or in those who maintained BMI≈30 kg/m2 across the study period (OR=2.33; 1.92, 2.83) relative to the same ≈8 BMI unit gain, but between 20-27y (OR=1.44; 1.10, 1.87).ConclusionsSpecific periods and patterns of weight gain in the transition from adolescence to adulthood might be critical for CVD preventive efforts.

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