Relationship between Exposure to Industrial Noise and Serum Lipid Profile

  • Ramin Mehrdad Mail Center for Research on Occupational Diseases, Tehran University of Medical Sciences, Tehran, Iran.
  • Afshin Malek Bahabad Department of Occupational Medicine, Tehran University of Medical Sciences, Tehran, Iran.
  • Azadeh Nahan Moghaddam Center for Research on Occupational Diseases, Tehran University of Medical Sciences, Tehran, Iran.
Noise, Hyperlipidemia, Occupational exposure, Cardiovascular disease


Aim of our study was to investigate the effects of exposure to industrial noise on serum lipid profile among workers who are exposed to noise at work. In a historical cohort study, we recruited 154 and 146 male workers as high and low level noise exposure groups respectively. We defined workers with at least one year exposure to noise level more than 90 dB as high exposure group, and those with exposure to less than 80 dB as low exposure group. Afterwards, in the fasting blood specimens of participants we measured serum Triglyceride (TG), total Cholesterol (TC), high and low density lipoprotein (HDL and LDL). Mean of TG, TC, HDL and LDL for low exposure group were 148, 189, 38 and 103 mg/dl and for high exposure group were 237, 189, 37 and 104 mg/dl respectively. Mean serum TG between two groups was different. Even after adjustment for age, BMI, smoking and work hours per week, serum TG among high exposure group was 89 mg/dl higher than low exposure group and this difference was statistically significant (P=0.00). There was no significant difference between two groups in TC, LDL and HDL levels. This study did not find a statistically significant relationship between exposure to noise and serum TC, LDL and HDL, but TG in two groups was different and this difference was statistically significant.


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How to Cite
Mehrdad R, Malek Bahabad A, Nahan Moghaddam A. Relationship between Exposure to Industrial Noise and Serum Lipid Profile. Acta Med Iran. 49(11):725-729.