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8-Oxo-7, 8-dihydro-2'-deoxyguanosine as a biomarker of DNA damage by mobile phone radiation.

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Khalil AM, Gagaa MH, Alshamali AM. · 2012

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Cell phone radiation at legal SAR limits causes measurable DNA damage in real-time, with peak damage occurring within one hour of exposure.

Plain English Summary

Summary written for general audiences

Researchers exposed rats to cell phone radiation at 1800 MHz for 2 hours and measured a specific marker of DNA damage (8-oxodG) in their urine. They found significant increases in DNA damage markers throughout most of the exposure period, with peak damage occurring 1 hour after exposure began. This suggests that cell phone radiation can cause oxidative damage to DNA, which is a key mechanism linked to cancer development.

Why This Matters

This study provides direct biological evidence that cell phone radiation causes DNA damage through oxidative stress. The exposure level used (1.0 W/kg SAR) is at the legal limit for cell phones in many countries, making these findings highly relevant to everyday phone use. What makes this research particularly compelling is the real-time measurement of DNA damage markers in urine, showing that cellular repair mechanisms are actively working to fix radiation-induced damage. The peak damage at 1 hour followed by repair activity demonstrates that our cells are under constant stress when exposed to RF radiation. This adds to the growing body of evidence showing that current safety standards may not adequately protect against the biological effects of wireless technology.

Exposure Details

SAR
1 W/kg
Source/Device
1800 MHz
Exposure Duration
RFR for 2 h and 4-h period at 0.5, 1.0, 2.0 and 4.0 h

Exposure Context

This study used 1 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: 1 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern rangeFCC limit is 2x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.80 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.80 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

We examined the effect of exposure to mobile phone 1800 MHz radio frequency radiation (RFR) upon the urinary excretion of 8-oxo-7, 8-dihydro-2′-deoxyguanosine (8-oxodG), one major form of oxidative DNA damage, in adult male Sprague-Dawley rats

Twenty-four rats were used in three independent experiments (RFR exposed and control, 12 rats, each)...

With the exception of the urine collected in the last half an hour of exposure, significant elevatio...

Cite This Study
Khalil AM, Gagaa MH, Alshamali AM. (2012). 8-Oxo-7, 8-dihydro-2'-deoxyguanosine as a biomarker of DNA damage by mobile phone radiation. Hum Exp Toxicol. 31(7):734-740, 2012.
Show BibTeX
@article{am_2012_8oxo7_8dihydro2deoxyguanosine_as_a_541,
  author = {Khalil AM and Gagaa MH and Alshamali AM.},
  title = {8-Oxo-7, 8-dihydro-2'-deoxyguanosine as a biomarker of DNA damage by mobile phone radiation.},
  year = {2012},
  doi = {10.1177/0960327111433184},
  url = {https://journals.sagepub.com/doi/abs/10.1177/0960327111433184},
}
DOI: 10.1177/0960327111433184

Cited By (25 papers)

Quick Questions About This Study

8-oxodG is a biomarker that indicates DNA damage from oxidative stress. A 2012 study found that 1800 MHz cell phone radiation significantly increased 8-oxodG levels in rat urine during most of a 2-hour exposure period, suggesting cellular DNA damage was occurring.
DNA damage markers from 1800 MHz cell phone radiation peak at 1 hour after exposure begins. The 2012 rat study showed significant 8-oxodG elevations throughout most of the 2-hour exposure period, with maximum levels occurring 60 minutes into the exposure.
Yes, urine tests can detect DNA damage from cell phone radiation. Researchers measured 8-oxodG levels in rat urine after 1800 MHz exposure and found significant increases compared to unexposed animals, demonstrating that DNA damage markers appear in urine following radiofrequency exposure.
The evidence suggests DNA repair mechanisms activate during cell phone radiation exposure. The 2012 study found 8-oxodG levels dropped in the final 30 minutes of 1800 MHz exposure, indicating cellular repair processes were working to fix the radiation-induced DNA damage.
8-oxodG is a key biomarker linking radiation exposure to cancer development through oxidative DNA damage. The 2012 study's finding of elevated 8-oxodG from 1800 MHz radiation provides biological evidence for a mechanism by which cell phone radiation could potentially contribute to cancer risk.