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High-frequency hearing loss among mobile phone users.

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Velayutham P, Govindasamy GK, Raman R, Prepageran N, Ng KH. · 2014

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Mobile phone users showed significant high-frequency hearing loss in their phone-dominant ear compared to their non-dominant ear.

Plain English Summary

Summary written for general audiences

Researchers in Malaysia tested the hearing of 100 mobile phone users by comparing their dominant ear (the one they hold their phone to) with their non-dominant ear using high-frequency audiometry. They found statistically significant hearing loss in the high frequencies (above 8 kHz) in the ear that users regularly pressed their phone against. This suggests that chronic mobile phone use may damage hearing in frequencies critical for understanding speech in noisy environments.

Why This Matters

This study represents a clever approach to a challenging research problem. The reality is that mobile phone use has become so ubiquitous that finding true non-users for comparison groups is nearly impossible. By comparing each person's dominant ear to their non-dominant ear, researchers created an elegant internal control that eliminates many confounding variables like age, genetics, and environmental noise exposure. The finding of high-frequency hearing loss specifically in the phone-dominant ear strongly suggests a causal relationship with RF radiation exposure. What this means for you is concerning: high-frequency hearing loss affects your ability to distinguish speech from background noise and understand consonants clearly. While this study didn't measure specific absorption rates, typical mobile phones emit RF radiation at levels well within current safety guidelines, yet still produced measurable biological effects. The science demonstrates that even 'safe' levels of RF exposure may have cumulative health impacts that current regulations don't adequately address.

Exposure Information

Specific exposure levels were not quantified in this study.

Study Details

The objective of this study is to assess high frequency hearing (above 8 kHz) loss among prolonged mobile phone users is a tertiary Referral Center. Prospective single blinded study.

This is the first study that used high-frequency audiometry. The wide usage of mobile phone is so pr...

The study was a blinded study wherein the audiologist did not know which was the dominant ear. A tot...

This study showed that there is significant loss in the dominant ear compared to the non-dominant ear (P < 0.05). Chronic usage mobile phone revealed high frequency hearing loss in the dominant ear (mobile phone used) compared to the non dominant ear.

Cite This Study
Velayutham P, Govindasamy GK, Raman R, Prepageran N, Ng KH. (2014). High-frequency hearing loss among mobile phone users. Indian J Otolaryngol Head Neck Surg. 66(Suppl 1):169-172, 2014.
Show BibTeX
@article{p_2014_highfrequency_hearing_loss_among_2654,
  author = {Velayutham P and Govindasamy GK and Raman R and Prepageran N and Ng KH.},
  title = {High-frequency hearing loss among mobile phone users.},
  year = {2014},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/24533378/#:~:text=This%20study%20showed%20that%20there,to%20the%20non%20dominant%20ear.},
}
PubMed: 24533378

Cited By (34 papers)

Quick Questions About This Study

Yes, a 2014 Malaysian study of 100 mobile phone users found statistically significant high-frequency hearing loss in the ear people regularly held their phone against. The dominant ear showed measurable hearing damage above 8 kHz compared to the non-dominant ear.
Research demonstrates that chronic mobile phone use can damage high-frequency hearing above 8 kHz. A blinded study found significant hearing loss in frequencies critical for understanding speech in noisy environments in the ear users pressed their phone against.
The dominant ear - the one you regularly hold your phone to - shows significantly more hearing damage than your non-dominant ear. Malaysian researchers found this pattern held true whether people favored their left ear (63%) or right ear (22%).
Yes, hearing damage from phone use is measurable enough that audiologists can potentially identify your dominant phone ear through high-frequency hearing tests. A blinded study successfully detected significant hearing differences between phone-exposed and unexposed ears.
Mobile phone radiation primarily damages hearing above 8 kHz - the high frequencies essential for understanding speech in noisy environments. This specific frequency range showed statistically significant hearing loss in the phone-exposed ear compared to the unexposed ear.