Abstract
BackgroundOccupational noise exposure was related to cardiovascular disease, of which dyslipidemia was an important inducement. This study investigated the relationship between occupational noise exposure and dyslipidemia.MethodsFour hundred ninety-two occupational noise-exposed workers and 664 non-exposed workers were recruited to conduct environmental noise tests and personal occupational physical examinations. A lasso-logistic regression model was used to estimate the relative risk of dyslipidemia. A restricted cubic spline was used to estimate the association between noise exposure years and dyslipidemia after adjusting for potential confounding factors.ResultsA crude association was observed between the occupational noise exposure (75–85 dB(A)) and dyslipidemia. After adjusting for confounding factors, there was a non-linear relationship between noise exposure years and dyslipidemia (P for non-linearity =0.01). Workers exposed to 75–85 dB(A) for 11 to 24.5 years had a higher risk of dyslipidemia than non-exposed workers.ConclusionsA positive and non-linear exposure-response relationship was found in workers exposed to 75–85 dB(A) whose exposure years were between 11 and 24.5. Workers had the highest risk of dyslipidemia when exposed for 13.5 years.
Highlights
Occupational noise exposure was related to cardiovascular disease, of which dyslipidemia was an important inducement
Significant differences were identified between the exposed group and the nonexposed group in sex, body mass index (BMI), Pure-tone audiometry (PTA), hypertension, fatter liver, and diabetes
Our results have shown that there was no association between occupational noise exposure and dyslipidemia when other confounding factors were considered, which were consistent with others [18]
Summary
Occupational noise exposure was related to cardiovascular disease, of which dyslipidemia was an important inducement. This study investigated the relationship between occupational noise exposure and dyslipidemia. Epidemiological studies have reported increased mortality and incidence of cardiovascular diseases after chronic occupational noise exposure [3,4,5,6]. A psychosocial stressor, could lead to the increase of blood lipids, blood pressure, and blood glucose, which were the pathological basis of cardiovascular disease [7]. Studying the effects of noise on blood lipids, blood pressure and blood glucose was vital for the prevention of cardiovascular disease. A large amount of evidences show that noise exposure could cause an increase in blood pressure and blood glucose [10,11,12,13]. Some researchers have observed that there were increased cholesterol and triglyceride when workers were exposed to occupational noise above 80
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