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SAR / Device Absorption

The influence of the reflective environment on the absorption of a human male exposed to representative base station antennas from 300 MHz to 5 GHz.

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Vermeeren G, Gosselin MC, Kühn S, Kellerman V, Hadjem A, Gati A, Joseph W, Wiart J, Meyer F, Kuster N, Martens L. · 2010

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Reflective surfaces can increase cell tower radiation absorption by up to 630%, yet safety guidelines ignore real-world environments.

Plain English Summary

Summary written for general audiences

Researchers used computer modeling to study how reflective surfaces like walls and ground affect radiation absorption in the human body when exposed to cell tower antennas at various frequencies. They found that reflective environments can dramatically change radiation absorption levels - sometimes reducing it by 87% and other times increasing it by 630% compared to open space exposure. This reveals that current safety guidelines, which don't account for reflective environments, may not adequately protect people in real-world settings with buildings and metal surfaces.

Why This Matters

This research exposes a critical blind spot in how we assess EMF safety. The science demonstrates that reflective surfaces in our environment - walls, buildings, metal structures - can dramatically amplify or reduce radiation absorption in unpredictable ways. What this means for you is that the safety assessments used to approve cell towers assume you're standing in an empty field, not in the real world surrounded by reflective surfaces. The study's finding that current safety guidelines 'not always showed to be compliant' when accounting for realistic environments should concern regulators. Put simply, we're using safety standards based on idealized conditions that don't exist in the places where people actually live and work.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 300 MHz - 5 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 300 MHz - 5 GHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study. The study examined exposure from: 300 MHz, 450 MHz, 900 MHz, 2.1 GHz, 3.5 GHz and 5.0 GHz

Study Details

This study investigates numerically the variation on the whole-body and peak spatially averaged-specific absorption rate (SAR) in the heterogeneous virtual family male placed in front of a base station antenna in a reflective environment.

The SAR values in a reflective environment are also compared to the values obtained when no environm...

It has been observed that the ratio of the SAR in the virtual family male in a reflective environmen...

Cite This Study
Vermeeren G, Gosselin MC, Kühn S, Kellerman V, Hadjem A, Gati A, Joseph W, Wiart J, Meyer F, Kuster N, Martens L. (2010). The influence of the reflective environment on the absorption of a human male exposed to representative base station antennas from 300 MHz to 5 GHz. Phys Med Biol. 55(18):5541-5555, 2010.
Show BibTeX
@article{g_2010_the_influence_of_the_2658,
  author = {Vermeeren G and Gosselin MC and Kühn S and Kellerman V and Hadjem A and Gati A and Joseph W and Wiart J and Meyer F and Kuster N and Martens L.},
  title = {The influence of the reflective environment on the absorption of a human male exposed to representative base station antennas from 300 MHz to 5 GHz.},
  year = {2010},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/20808028/},
}
PubMed: 20808028

Cited By (22 papers)

Quick Questions About This Study

Yes, buildings and reflective surfaces can dramatically change radiation absorption from cell towers. A 2010 study found that reflective environments increased radiation absorption by up to 630% compared to open spaces, while sometimes reducing it by 87%. Current safety guidelines don't account for these real-world conditions.
Indoor environments with reflective surfaces can significantly alter radiation exposure from cell towers. Research shows absorption levels can vary wildly - increasing over 600% or decreasing 87% depending on surrounding materials like walls and metal surfaces compared to outdoor open areas.
Yes, urban environments with buildings and metal surfaces create unpredictable radiation patterns from cell towers. Computer modeling revealed that reflective city environments can increase human radiation absorption by up to 630% compared to rural open spaces, making exposure levels highly variable.
Current safety guidelines may not adequately protect people in real-world environments. A 2010 study found that reflective surfaces around cell towers can create radiation absorption levels that don't comply with safety standards, yet these environmental factors aren't considered in current regulations.
Walls and reflective surfaces dramatically alter radiation patterns from cell towers. Research demonstrates that these common environmental features can either reduce radiation absorption by 87% or increase it by 630%, creating unpredictable exposure levels that current safety standards don't address.