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Auditory changes in mobile users: is evidence forthcoming?

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Panda NK, Modi R, Munjal S, Virk RS · 2011

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Long-term mobile phone use damages both inner ear function and brain hearing centers, with risk increasing after three years of regular use.

Plain English Summary

Summary written for general audiences

Researchers tested the hearing of 125 long-term mobile phone users (both GSM and CDMA networks) against 58 people who had never used mobile phones. They found that phone users had significantly more hearing damage in their inner ears and auditory processing centers in the brain, with the damage affecting both ears and worsening after three years of use.

Why This Matters

This study adds important evidence to growing concerns about mobile phone radiation's effects on our auditory system. The researchers found measurable hearing damage in both the cochlea (inner ear) and auditory cortex (brain's hearing center) among long-term users of both major network types. What makes this particularly significant is that the damage was bilateral, affecting both ears equally, which suggests the electromagnetic fields are impacting the entire auditory system rather than just the ear closest to the phone. The three-year threshold for increased risk aligns with other research showing cumulative effects from chronic EMF exposure. Put simply, your daily phone use may be gradually damaging your hearing in ways that standard hearing tests might not immediately detect.

Exposure Information

Specific exposure levels were not quantified in this study.

Study Details

This study was undertaken to assess and compare potential changes in hearing function at the level of the inner ear and central auditory pathway due to chronic exposure to electromagnetic waves from both global system for mobile communications (GSM) and code division multiple access (CDMA) mobile phone usage.

One hundred twenty-five subjects who were long-term mobile phone users (more than 1 year; 63 GSM and...

GSM and CDMA users were found to be at a significantly higher risk of having DPOAE absent as compare...

Long-term and intensive GSM and CDMA mobile phone use may cause damage to cochlea as well as the auditory cortex.

Cite This Study
Panda NK, Modi R, Munjal S, Virk RS (2011). Auditory changes in mobile users: is evidence forthcoming? Otolaryngol Head Neck Surg. 144(4):581-585, 2011.
Show BibTeX
@article{nk_2011_auditory_changes_in_mobile_2510,
  author = {Panda NK and Modi R and Munjal S and Virk RS},
  title = {Auditory changes in mobile users: is evidence forthcoming?},
  year = {2011},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/21493239/},
}
PubMed: 21493239

Cited By (18 papers)

Quick Questions About This Study

Yes, a 2011 study found that people who used mobile phones for more than 3 years had significantly more hearing damage in their inner ears and auditory processing centers compared to non-users. Both GSM and CDMA users showed bilateral hearing impairment.
Yes, research shows both GSM and CDMA mobile phone users face equally high risks of hearing damage. The study found no difference between network types - both caused similar bilateral damage to the cochlea and auditory cortex after long-term use.
Mobile phone radiation can damage the cochlea (inner ear) by causing DPOAE (distortion product otoacoustic emissions) to become absent, indicating hair cell damage. Users also showed higher speech frequency thresholds, meaning difficulty hearing certain sounds clearly.
Hearing tests reveal mobile phone users have absent DPOAE responses and lower MLR wave amplitudes with reduced Na and Pa components. These measurements indicate damage to both the inner ear's hair cells and the brain's auditory processing centers.
Yes, mobile phone radiation causes bilateral hearing damage, affecting both ears equally regardless of which ear you typically hold the phone against. The 2011 study found the same level of cochlear and auditory cortex damage in both ears.