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The genotoxic effect of radiofrequency waves on mouse brain.

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Karaca E, Durmaz B, Aktug H, Yildiz T, Guducu C, Irgi M, Koksal MG, Ozkinay F, Gunduz C, Cogulu O. · 2012

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Mouse brain cells showed 11-fold DNA damage increase from RF radiation at 0.725 W/kg, below current cell phone safety limits.

Plain English Summary

Summary written for general audiences

Turkish researchers exposed mouse brain cells to radiofrequency radiation at 10.715 GHz (similar to cell phone frequencies) for 6 hours daily over 3 days. They found an 11-fold increase in DNA damage markers and significant changes in gene expression related to cell death. This suggests that RF radiation at levels comparable to wireless devices can directly damage brain cell DNA and disrupt normal cellular functions.

Why This Matters

This study provides direct evidence that radiofrequency radiation can cause DNA damage in brain cells at exposure levels within range of everyday wireless devices. The 11-fold increase in micronucleus formation - a well-established marker of genetic damage - is particularly concerning because it occurred at a specific absorption rate of 0.725 W/kg, which is below the current FCC safety limit of 1.6 W/kg for cell phones. What makes this research especially significant is that it examined both DNA damage and gene expression changes simultaneously, showing that RF exposure doesn't just break DNA strands but also disrupts the cellular machinery that normally protects against such damage. The 7-fold decrease in STAT3 expression is notable because this gene plays a crucial role in cellular survival and DNA repair mechanisms. While this was an in vitro study using mouse cells, it adds to the growing body of evidence suggesting that current safety standards may not adequately protect against biological effects at the cellular level.

Exposure Details

SAR
0.725 W/kg
Power Density
0.84 µW/m²
Source/Device
10.715 GHz
Exposure Duration
continuously for 6 h per day for 3 days

Exposure Context

This study used 0.84 µW/m² for radio frequency:

This study used 0.725 W/kg for SAR (device absorption):

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.84 µW/m²Extreme Concern - 1,000 uW/m2FCC Limit - 10M uW/m2Effects observed in the Slight Concern rangeFCC limit is 11,904,762x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 10.71 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 10.71 GHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHzLogarithmic scale

Study Details

The aim of this study is to evaluate the genotoxic effects of RF waves in an experimental brain cell culture model.

Brain cell cultures of the mice were exposed to 10.715 GHz with specific absorbtion rate (SAR) 0.725...

It was found that MNi rate increased 11-fold and STAT3 expression decreased 7-fold in the cell cultu...

Cell phones which spread RF may damage DNA and change gene expression in brain cells.

Cite This Study
Karaca E, Durmaz B, Aktug H, Yildiz T, Guducu C, Irgi M, Koksal MG, Ozkinay F, Gunduz C, Cogulu O. (2012). The genotoxic effect of radiofrequency waves on mouse brain. J Neurooncol. 106(1):53-58, 2012.
Show BibTeX
@article{e_2012_the_genotoxic_effect_of_114,
  author = {Karaca E and Durmaz B and Aktug H and Yildiz T and Guducu C and Irgi M and Koksal MG and Ozkinay F and Gunduz C and Cogulu O. },
  title = {The genotoxic effect of radiofrequency waves on mouse brain.},
  year = {2012},
  doi = {10.1007/s11060-011-0644-z},
  url = {https://link.springer.com/article/10.1007/s11060-011-0644-z},
}
DOI: 10.1007/s11060-011-0644-z

Cited By (42 papers)

Quick Questions About This Study

Yes, Turkish researchers found that 10.715 GHz radiofrequency radiation caused an 11-fold increase in DNA damage markers in mouse brain cells after 6 hours daily exposure for 3 days. This frequency is similar to cell phone radiation levels.
A 2012 study showed that 6 hours of daily radiofrequency exposure at 10.715 GHz for 3 consecutive days increased DNA damage markers by 11-fold in mouse brain cell cultures compared to unexposed control cells.
Radiofrequency radiation at 10.715 GHz decreased STAT3 gene expression by 7-fold in mouse brain cells. STAT3 is important for cell survival, so this reduction suggests RF radiation disrupts normal cellular protective mechanisms.
Yes, just 3 days of radiofrequency exposure at 10.715 GHz significantly altered gene expression in mouse brain cells, particularly reducing STAT3 expression by 7-fold while increasing DNA damage markers by 11-fold.
Yes, the 10.715 GHz frequency used in this Turkish study falls within the range of frequencies used by wireless devices. The researchers specifically noted that cell phones spreading RF radiation may damage DNA and change gene expression.