Association of sleep duration with untreated diabetes in Japanese men

摘要

Objective: We assessed the cross-sectional association between sleep duration and untreated diabetes in Japanese men. Methods: Participants included 20,744 men aged 30-64years who first visited the general hospital in Tokyo for routine health assessments during 2003-2007. Untreated diabetes was defined as not being under diabetes treatment and fasting blood glucose of ≥126mg/dL or hemoglobin A 1c of ≥6.5%. Sleep duration (≤5, 6, 7, or ≥8h) and confounders were assessed using a questionnaire. Logistic regression was used to calculate odds ratios (ORs) for diabetes after adjustment for confounders. Results: The prevalence of untreated diabetes was 3.4% in all men. The prevalence of untreated diabetes by sleep duration was as follows: ≤5h: 3.5%; 6h: 3.3%; 7h: 3.2%; and ≥8h: 5.1%. Men who reported sleeping for ≤5h (OR: 1.52, 95% confidential interval [CI]: 1.22-1.90) and ≥8h (OR: 1.39, 95% CI: 1.05-1.85) were significantly more likely to have untreated diabetes compared with those who reported sleeping for 7h. In stratified analyses by obesity (body mass index ≥25.0kg/m 2), the association between long sleep duration (≥8h) and untreated diabetes remained significant only in obese men. Conclusion: Short sleep duration was significantly associated with untreated diabetes in both nonobese and obese men. Regarding long sleep duration, a significant association was observed in obese men only.