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Brain & Nervous System193 citations

Distribution of RF energy emitted by mobile phones in anatomical structures of the brain.

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Cardis E, Deltour I, Mann S, Moissonnier M, Taki M, Varsier N, Wake K, Wiart J. · 2008

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Most RF energy from mobile phones appears to be absorbed in the brain hemisphere on the side of use, mainly in the temporal lobe.

Plain English Summary

Summary written for general audiences

Most energy (97-99%) appears to be absorbed in the brain hemisphere on the side where the phone is used, mainly (50-60%) in the temporal lobe. The average relative SAR is highest in the temporal lobe (6-15% of peak SAR) and cerebellum (2-10%), and decreases very rapidly with increasing depth, particularly at higher frequencies. The SAR distribution appears to be fairly similar across phone models, between older and newer phones, and between phones with different antenna types and positions.

Why This Matters

The rapid worldwide increase in mobile phone use in the last decade has generated considerable interest in possible carcinogenic effects of radio frequency (RF). Because exposure to RF from phones is localized, if a risk exists it is likely to be greatest for tumours in regions with greatest energy absorption.

Study Details

The objective of the current paper was to characterize the spatial distribution of RF energy in the brain, using results of measurements made in two laboratories on 110 phones used in Europe or Japan.

Most (97-99% depending on frequency) appears to be absorbed in the brain hemisphere on the side wher...

Analyses of risk by location of tumour are therefore important for the interpretation of results of ...

Cite This Study
Cardis E, Deltour I, Mann S, Moissonnier M, Taki M, Varsier N, Wake K, Wiart J. (2008). Distribution of RF energy emitted by mobile phones in anatomical structures of the brain. Phys Med Biol. 53(11):2771-2783, 2008.
Show BibTeX
@article{e_2008_distribution_of_rf_energy_1953,
  author = {Cardis E and Deltour I and Mann S and Moissonnier M and Taki M and Varsier N and Wake K and Wiart J.},
  title = {Distribution of RF energy emitted by mobile phones in anatomical structures of the brain.},
  year = {2008},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/18451464/},
}
PubMed: 18451464

Cited By (193 papers)

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Quick Questions About This Study

The objective was to characterize the spatial distribution of RF energy in the brain using measurements from 110 phones in two laboratories.
Most energy (97-99%) appears to be absorbed in the brain hemisphere on the side where the phone is used, mainly (50-60%) in the temporal lobe.
The average relative SAR is highest in the temporal lobe (6-15% of peak SAR) and cerebellum (2-10%), and decreases very rapidly with increasing depth, particularly at higher frequencies.
The SAR distribution appears to be fairly similar across phone models, between older and newer phones, and between phones with different antenna types and positions.
Analyses of risk by location of tumour are therefore important for the interpretation of results of studies of brain tumours in relation to mobile phone use.