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Sleep duration as a risk factor for incident type 2 diabetes in a multiethnic cohort
Deborah A Beihl1, Angela D Liese, Steven M Haffner
1Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29205, USA.
Purpose:
We evaluated the association between sleep duration and type 2 diabetes in a multiethnic cohort, considering insulin sensitivity (S(I)) and secretion (acute insulin response [AIR]), two important diabetes risk factors.
Methods:
Among 900 diabetes-free persons, 146 developed incident type 2 diabetes. At baseline, sleep duration was assessed by self-report and S(I) and AIR by a frequently sampled intravenous glucose tolerance test.
Results:
Among non-Hispanic whites and Hispanics, short sleep (
Conclusion:
Our study supports the role of short sleep as an independent risk factor for type 2 diabetes in whites and Hispanics. While insulin sensitivity and secretion may explain previously reported associations of long sleep duration with diabetes risk, they do not seem to mediate the effects of short sleep on diabetes.
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