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Change in sleep duration and type 2 diabetes: The whitehall II study

Ferrie, JE and Kivimaki, M and Akbaraly, TN and Tabak, A and Abell, J and Smith, GD and Virtanen, M and Kumari, M and Shipley, MJ (2015) 'Change in sleep duration and type 2 diabetes: The whitehall II study.' Diabetes Care, 38 (8). 1467 - 1472. ISSN 0149-5992

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Abstract

©2015 by the American Diabetes Association. OBJECTIVE Evidence suggests that short and long sleep durations are associated with a higher risk of type 2 diabetes. Using successive data waves spanning > 20 years, we examined whether a change in sleep duration is associatedwith incident diabetes. RESEARCH DESIGN AND METHODS Sleep duration was reported at the beginning and end of four 5-year cycles: 1985- 1988 to 1991-1994 (n = 5,613), 1991-1994 to 1997-1999 (n = 4,193), 1997-1999 to 2002-2004 (n = 3,840), and 2002-2004 to 2007-2009 (n = 4,195). At each cycle, change in sleep duration was calculated for participants without diabetes. Incident diabetes at the end of the subsequent 5-year period was defined using 1) fasting glucose, 2) 75-g oral glucose tolerance test, and 3) glycated hemoglobin, in conjunction with diabetes medication and self-reported doctor diagnosis. RESULTS Compared with the reference group of persistent 7-h sleepers, an increase of ‡2 h sleep per night was associated with a higher risk of incident diabetes (odds ratio 1.65 [95% CI 1.15, 2.37]) in analyses adjusted for age, sex, employment grade, and ethnic group. This association was partially attenuated by adjustment for BMI and change inweight (1.50 [1.04, 2.16] ). An increased risk of incident diabetes was also seen in persistent short sleepers (average ≤5.5 h/night; 1.35 [1.04, 1.76]), but this evidence weakened on adjustment for BMI and change in weight (1.25 [0.96, 1.63] ). CONCLUSIONS This study suggests that individuals whose sleep duration increases are at an increased risk of type 2 diabetes.

Item Type: Article
Subjects: H Social Sciences > H Social Sciences (General)
R Medicine > R Medicine (General)
Divisions: Faculty of Social Sciences > Institute for Social and Economic Research
Depositing User: Jim Jamieson
Date Deposited: 20 Aug 2015 19:12
Last Modified: 17 Aug 2017 17:34
URI: http://repository.essex.ac.uk/id/eprint/14574

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