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Abstract
Previous studies have reported that a potential association between exposure to outdoor light at night (LAN) and diseases. However, there is no evidence regarding the impacts of outdoor LAN exposure on lipid metabolism in humans. This study aims to evaluate the associations between outdoor LAN exposure and the prevalence of dyslipidemia, using a nationwide sample of 10,894 adults aged ≥ 45 years from 150 investigated sites across China in 2011–2012. Outdoor LAN exposure was assessed by using satellite imaging data. The prevalence ratio (PR) was calculated. The present study found that a per-quintile LAN exposure was positively associated with the prevalence of high LDL-cholesterol (PR = 1.10, 95% CI = 1.04–1.16), high triglyceride (PR = 1.07, 95% CI = 1.03–1.12), low HDL-cholesterol (PR = 1.11, 95% CI = 1.08–1.16), and dyslipidemia (PR = 1.06, 95% CI = 1.03–1.09). The fifth quintile of LAN exposure was associated with a significantly increased prevalence of dyslipidemia (PR = 1.20, 95% CI = 1.07–1.35) compared with the first quintile of exposure. Long-term exposure to outdoor LAN was positively associated with dyslipidemia prevalence. Public policies aimed at reducing light pollution at night, guided by the spatial distribution patterns, could lessen the adverse effects.
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Details
1 Peking University Third Hospital, Department of Anesthesiology, Beijing, China (GRID:grid.411642.4) (ISNI:0000 0004 0605 3760)
2 Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Shanghai, China (GRID:grid.412277.5) (ISNI:0000 0004 1760 6738)
3 Beicai Community Health Services Center, Shanghai, China (GRID:grid.412277.5)
4 Yankuang New Journey General Hospital, Chronic Disease Management Center, Zoucheng, China (GRID:grid.412277.5)
5 Capital Medical University, Department of Geriatrics, Beijing Tongren Hospital, Beijing, China (GRID:grid.24696.3f) (ISNI:0000 0004 0369 153X)