Bedroom lighting environment and incident diabetes mellitus: a longitudinal study of the HEIJO-KYO cohort.


Department of Epidemiology, Nara Medical University School of Medicine, Nara, Japan. Electronic address: [Email]


Light information received by the brain influences human circadian timing and metabolism; low-level light at night (LAN) significantly increased body mass and led to prediabetes in mice. We hypothesized that LAN exposure increases the diabetes risk in humans. The aim of the present study was to evaluate a longitudinal association between LAN exposure and the incidence of diabetes in a general population.


Bedroom,Circadian rhythm,Cohort,Diabetes,Light at night,

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