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Cardiovascular Risk Factors and Demographic Characteristics in Iranian Adults with Noise-Induced Hearing Impairment:

Mahdi Soheyli1, Mobin Obeidinia1, Arya Shirani2

  • 1Preventive Medicine and Public Health Research Center, Psychosocial Health Research Institute, Department of Community and Family Medicine, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.

Medical Journal of the Islamic Republic of Iran
|July 28, 2026
PubMed

Insights

Hearing loss is linked to age, male gender, and lower education in Iranian adults. While cardiovascular risks show a connection, demographic factors are more strongly associated with hearing impairment.

Area of Science:

  • Public Health
  • Audiology
  • Epidemiology

Background:

  • Hearing loss (HL), including noise-induced hearing loss (NIHL), is a widespread global health issue and the third most common disability.
  • Cardiovascular risk factors (RFs) like hypertension (HTN), diabetes mellitus (DM), and dyslipidemia (DLP) are significant health concerns.

Purpose of the Study:

  • To investigate the relationship between hearing loss and cardiovascular risk factors in the Iranian adult population.
  • To identify demographic and clinical factors associated with hearing loss in this population.

Main Methods:

  • A study involving 1,996 individuals undergoing routine health checks at Iran University of Medical Sciences.
  • Data collection included audiometry and laboratory tests to assess hearing and cardiovascular risk factors.

Main Results:

  • Older age and male gender were significantly associated with hearing loss.
  • Higher educational attainment (tertiary vs. primary) showed a protective effect against hearing loss.
  • While initial analyses suggested links between HL and cardiovascular RFs, these became non-significant after adjusting for confounders. However, a single cardiovascular RF was linked to HL in the total sample and in men, but not in women.

Conclusions:

  • Hearing loss in Iranian adults is significantly associated with demographic factors: age, gender, and educational level.
  • These findings highlight the need for hearing health strategies that consider these demographic variables in occupational and public health settings.
Abstract

Keywords:
Cardiovascular risk factorsCross-sectional studyDemographic characteristicsDiabetes mellitusDyslipidemiaHearing impairmentHypertensionIranian adultsNoise-induced hearing loss

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