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The duration of obesity and the risk of type 2 diabetes

Abdullah, A, Stoelwinder, J, Shortreed, S, Wolfe, Rory, Stevenson, C, Walls, H, de Courten, Maximilian and Peeters, A (2010) The duration of obesity and the risk of type 2 diabetes. Public Health Nutrition, 14 (1). pp. 119-126. ISSN 1368-9800 (print) 1475-2727 (online)

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Abstract

Objective The evidence for the association between obesity and the risk of type 2 diabetes has been derived mainly from the analysis of the degree of obesity. The role of the duration of obesity as an independent risk has not been fully explored. The objective of the present study was to investigate the association between the duration of obesity and the risk of type 2 diabetes. Design Prospective cohort study. Setting The Framingham Heart Study (FHS), follow-up from 1948 to 1998. Subjects A total of 1256 FHS participants who were free from type 2 diabetes at baseline, but were obese on at least two consecutive of the study’s twenty-four biennial examinations, were included. Type 2 diabetes status was collected throughout the 48 years of follow-up of the study. The relationship between duration of obesity and type 2 diabetes was analysed using time-dependent Cox models, adjusting for a number of covariates. Results The unadjusted hazard ratio (HR) for the risk of type 2 diabetes for men was 1·13 (95 % CI 1·09, 1·17) and for women was 1·12 (95 % CI 1·08, 1·16) per additional 2-year increase in the duration of obesity. Adjustment for sociodemographic variables, family history of diabetes, health behaviour and physical activity made little difference to these HR. For women the evidence of a dose–response relationship was less clear than for men, particularly for women with an older age at obesity onset. Conclusions The duration of obesity is a relevant risk factor for type 2 diabetes, independent of the degree of BMI.

Item Type: Article
Uncontrolled Keywords: obesity, duration of obesity, body mass index, type 2 diabetes, framingham heart study
Subjects: FOR Classification > 1117 Public Health and Health Services
Faculty/School/Research Centre/Department > College of Health and Biomedicine
Depositing User: Ms Julie Gardner
Date Deposited: 07 Jul 2014 07:29
Last Modified: 20 Jan 2015 03:24
URI: http://vuir.vu.edu.au/id/eprint/25424
DOI: https://doi.org/10.1017/S1368980010001813
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Citations in Scopus: 73 - View on Scopus

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