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Auditory changes in mobile users: is evidence forthcoming?

Naresh K Panda1, Rahul Modi, Sanjay Munjal

  • 1Department of Otolaryngology, Postgraduate Institute of Medical Education and Research, Chandigarh, India. npanda59@yahoo.co.in

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|April 16, 2011
PubMed
Summary
This summary is machine-generated.

Long-term mobile phone use, both Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA), may harm hearing. Studies show increased risk of hearing damage in the inner ear and auditory cortex with prolonged use.

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Area of Science:

  • Audiology
  • Neuroscience
  • Public Health

Background:

  • Growing concerns exist regarding the health implications of electromagnetic frequency (EMF) exposure from mobile phones.
  • Mobile phone usage has become ubiquitous globally, necessitating research into potential biological effects.

Purpose of the Study:

  • To evaluate and compare auditory pathway changes in long-term users of Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA) mobile phones.
  • To assess the impact of chronic electromagnetic wave exposure on inner ear and central auditory functions.

Main Methods:

  • A cohort study involving 125 long-term mobile phone users (GSM and CDMA) and 58 non-users.
  • Audiological assessments included pure tone audiometry, tympanometry, distortion product otoacoustic emissions (DPOAE), auditory brain responses (ABR), and middle latency responses (MLRs).

Main Results:

  • GSM and CDMA users exhibited a higher incidence of absent DPOAE compared to controls.
  • Increased speech frequency thresholds and reduced MLR wave amplitudes (Na and Pa) were observed in mobile phone users.
  • Usage exceeding 3 years was identified as a significant risk factor for auditory damage, affecting both ears.

Conclusions:

  • Chronic exposure to electromagnetic waves from both GSM and CDMA mobile phones may lead to cochlear damage.
  • Long-term and intensive mobile phone use is associated with potential damage to the auditory cortex.