ABSTRACT
Background@#A positive association between air pollution and insulin resistance has been shown in previous studies as a precursor state of type 2 diabetes, especially in older adults. This study was conducted to investigate the association between insulin resistance and environmental polycyclic aromatic hydrocarbon (PAH) exposure as ubiquitous outdoor and indoor air pollution components. @*Methods@#From the second Korean National Environmental Health Survey, 5,717 adults aged ≥19 years were included in this study. To identify the association between environmental PAH exposure (urinary 1-hydroxypyrene, 1-OHP) and insulin resistance, defined by the ratio of triglyceride to high-density lipoprotein cholesterol, we performed multiple stepwise regression analysis, adjusting for age, sex, education, physical activity, exposure to smoking and air pollution, body mass index, hypertension, and diabetes mellitus. @*Results@#Urinary 1-OHP concentration was significantly associated with the ratio of triglyceride to high-density lipoprotein cholesterol. @*Conclusion@#Environmental exposure to PAHs is associated with increased insulin resistance in adults.