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August 11, 2026Journal of Health Population and NutritionOpen Access

Associations of outdoor artificial light at night with type 2 diabetes and metabolic syndrome among Chinese adults

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Authors

LHLu HeWuhan UniversityKQKecheng QuWuhan UniversityCZCheng ZengWuhan City Chinese Medicine Hospital

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Implication

Cross-sectional study investigates the link between outdoor artificial light and metabolic diseases, implying environmental impacts on health.

Key Points

  • The study aims to explore the relationship between outdoor artificial light at night and the prevalence of type 2 diabetes and metabolic syndrome.
  • Cross-sectional analysis of 57,898 Chinese adults assessed for type 2 diabetes and a subset of 25,735 for metabolic syndrome.
  • ALAN exposure measured using satellite-derived nighttime light intensity data within a 500 m radius of participants' residences.
  • Multivariable logistic regression and generalized additive models were used to analyze data for dose-response relationships.
  • Higher ALAN exposure was linked to increased odds of type 2 diabetes (OR = 1.68, highest vs. lowest quartile) and metabolic syndrome (OR = 1.20).
  • Threshold ranges identified: 28.05–50.97 nW/cm²/sr for type 2 diabetes and 23.31–50.17 nW/cm²/sr for metabolic syndrome.
  • Stronger associations for type 2 diabetes in adults over 45 years and for metabolic syndrome in those over 60 years.

Cite This Study

He et al. (2026) studied this question.

synapsesocial.com/papers/6a7ace1a3401087f2249de10https://doi.org/10.1186/s41043-026-01414-7
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Exposure to outdoor artificial light at night increases risk and burden of metabolic disease in Ningxia, China2023
  2. 2Outdoor artificial light-at-night and cardiometabolic disease risk: an urban perspective from the Catalan GCAT cohort study2024 · 16 citations
  3. 3Association of outdoor artificial light at night with myopia among Chinese adolescents: a representative cross-sectional study2024 · 2 citations
  4. 4Association between long-term exposure to artificial light at night and air pollution, and cardiovascular diseases in middle-aged and older adults2026
  5. 5Independent and combined relationships between nighttime light exposure, air pollution, PM2.5 constituents, greenness and diabetes or high blood sugar: a national prospective cohort study2025 · 2 citations