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Exposure to loud noise, bilateral high-frequency hearing loss and coronary heart disease

Wen Qi Gan1, Jacqueline Moline2, Hyun Kim3

  • 1Department of Preventive Medicine and Environmental Health, University of Kentucky College of Public Health, Lexington, Kentucky, USA.

Occupational and Environmental Medicine
|September 17, 2015
PubMed

Insights

Bilateral high-frequency hearing loss, an indicator of loud noise exposure, is linked to a higher risk of coronary heart disease (CHD). This association is strongest in workers exposed to occupational noise.

Area of Science:

  • Occupational health
  • Cardiology
  • Audiology

Background:

  • Bilateral high-frequency hearing loss often results from chronic exposure to loud noise.
  • Coronary heart disease (CHD) is a significant public health concern.
  • The link between noise exposure and cardiovascular health requires further investigation.

Purpose of the Study:

  • To investigate the association between bilateral high-frequency hearing loss and the presence of coronary heart disease (CHD).
  • To explore if occupational noise exposure modifies this association.

Main Methods:

  • Analysis of 5223 participants (aged 20-69) from the National Health and Nutrition Examination Survey (1999-2004).
  • Bilateral high-frequency hearing loss defined as average hearing threshold ≥25 dB at 3, 4, and 6 kHz in both ears.
  • CHD defined by self-reported physician diagnoses.

Main Results:

  • Participants with bilateral high-frequency hearing loss had a higher likelihood of CHD (OR 1.91).
  • The association was significantly stronger for currently employed workers exposed to loud occupational noise (OR 4.23).
  • No significant association was found for unilateral hearing loss or low-frequency hearing loss, nor for participants not exposed to loud noise.

Conclusions:

  • Chronic exposure to loud occupational noise, indicated by bilateral high-frequency hearing loss, is associated with an increased risk of coronary heart disease.
  • This finding underscores the importance of noise control in preventing cardiovascular disease in occupational settings.
Abstract

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