Tehran University of Medical Sciences International Journal of Occupational Hygiene 2008-5109 17 2 2025 12 09 67 72 Vida Rezaei-Hachesu Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Shadi Naderyan Feli Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran Ali Askari Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran | Department of Occupational Health Engineering, Oil Industries Commissioning and Operation Company (OICO), Tehran, Iran 2025 04 09 2025 04 27 Background: Workplace noise is one of the most significant occupational hazards and can adversely affect workers’ health. This study investigated the prevalence of noise-induced hearing loss (NIHL) and its association with blood pressure (BP) among workers in an Iranian oilfield. Methods: This cross-sectional study included 670 male workers, excluding those with cardiovascular conditions or specific ear-related symptoms. Noise exposure and hearing thresholds were assessed. BP was recorded using a digital sphygmomanometer, with hypertension defined as systolic BP (SBP) ≥140 mmHg or diastolic BP (DBP) ≥90 mmHg. Results: A 12.7% prevalence of NIHL was observed, including mild (6.2%) and moderate (2.1%) cases. Workers with NIHL had significantly higher mean SBP (118.16 vs. 115.81 mmHg, p = 0.01) and DBP (77.45 vs. 75.53 mmHg, p = 0.001) compared to those without NIHL. The prevalence of hypertension was 2.7%. Conclusion: The findings suggest that chronic noise exposure may contribute to both cardiovascular and auditory damage, likely due to noise-triggered stress responses. https://ijoh.tums.ac.ir/index.php/ijoh/article/view/685 https://ijoh.tums.ac.ir/index.php/ijoh/article/download/685/860