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Association between exposure to heavy metals in atmospheric particulate matter and sleep quality: A nationwide data linkage study

 Byung Kwon Kim  ;  Changsoo Kim  ;  Jaelim Cho 
 ENVIRONMENTAL RESEARCH, Vol.247 : 118217, 2024-04 
Journal Title
Issue Date
Adult ; Air Pollutants* / analysis ; Air Pollutants* / toxicity ; Aluminum ; Cadmium / analysis ; Environmental Exposure / analysis ; Humans ; Manganese / analysis ; Metals, Heavy* / analysis ; Metals, Heavy* / toxicity ; Particulate Matter / analysis ; Sleep Quality
Atmospheric particulate matter ; Heavy metal exposure ; Sleep quality
Background: Recent studies have demonstrated that long-term exposure to particulate matter (PM) is associated with poor sleep quality. However, no studies have linked PM constituents, particularly heavy metals, to sleep quality. Objective: This study investigated the association between exposure to heavy metals in PM and sleep quality. Methods: We obtained nationwide data from the Korean Community Health Survey conducted in 2018 among adults aged 19–80 years. Sleep quality was evaluated using Pittsburgh Sleep Quality Index (PSQI). Poor sleep quality was defined as PSQI ≥5. One-year and three-month average concentrations of heavy metals (lead, manganese, cadmium, and aluminum) in PM with diameter ≤10 μm were obtained from nationwide air quality monitoring data and linked to the survey data based on individual district-level residential addresses. Logistic regression analyses were performed after adjusting for age, gender, education level, marital status, smoking status, alcohol consumption, history of hypertension, and history of diabetes mellitus. Results: Of 32,050 participants, 17,082 (53.3%) reported poor sleep quality. Increases in log-transformed one-year average lead (odds ratio, 1.14; 95% confidence interval, 1.08−1.20), manganese (1.31; 1.25−1.37), cadmium (1.03; 1.00−1.05), and aluminum concentrations (1.17; 1.10−1.25) were associated with poor sleep quality. Increases in log-transformed three-month average manganese (odds ratio, 1.13; 95% confidence interval, 1.09−1.17) and aluminum concentrations (1.28; 1.21−1.35) were associated with poor sleep quality. Conclusion: We showed for the first time that exposure to airborne lead, manganese, cadmium, and aluminum were associated with poor sleep quality. This study may be limited by self-reported sleep quality and district-level exposure data. © 2024
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1. College of Medicine (의과대학) > Dept. of Preventive Medicine (예방의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chang Soo(김창수) ORCID logo https://orcid.org/0000-0002-5940-5649
Cho, Jae Lim(조재림)
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