Outdoor light at night in relation to glucose homoeostasis and diabetes in Chinese adults: a national and cross-sectional study of 98,658 participants from 162 study sites
Authors' conclusion
There were significant associations between chronic exposure to higher intensity of outdoor LAN with increased risk of impaired glucose homoeostasis and diabetes prevalence. Our findings contribute to the growing evidence that LAN is detrimental to health and point to outdoor LAN as a potential novel risk factor for diabetes.
Study context
- Population
- Adults aged ≥18 years living ≥6 months in current residence, 162 sites across mainland China, 2010 (China Noncommunicable Disease Surveillance Study); mean age 42.7 years53,515 women
- Participants
- 98,658 adults
- Exposure
- Higher vs lower outdoor light at night (LAN) exposure
- Outcome
- Diabetes prevalence (ADA criteria) and glucose homoeostasis markers
Methodological detailsnationally representative, 162 study sites
- Nationally representative
- 162 study sites
Main finding
As reported in the abstract
Diabetes prevalence
Prevalence ratio (95% CI)
Highest quintilevs Lowest quintile
1.28(1.03–1.60)
Per-quintile LAN exposure
1.07(1.02–1.12)
Observational data: associations, not effects.
Further findings
Glucose homoeostasis markers
- Outdoor LAN positively associated with HbA1c, fasting and 2 h glucose and HOMA-IR; negatively associated with HOMA-B
Original publication
Outdoor light at night in relation to glucose homoeostasis and diabetes in Chinese adults: a national and cross-sectional study of 98,658 participants from 162 study sites. Diabetologia. Published 14 November 2022. doi:10.
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