8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.

Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

Radiat Res 156:328-332, 2001

No Effects Found

Authors not listed · 2001

Share:

Cell phone radiation at 3-5 W/kg caused no DNA damage in mouse cells over 24 hours of exposure.

Plain English Summary

Summary written for general audiences

Researchers exposed mouse cells to cell phone radiation at power levels of 3-5 W/kg for up to 24 hours and found no DNA damage using sensitive laboratory tests. The study used both CDMA and FDMA signals similar to early cell phone networks. Temperature was carefully controlled to isolate radiation effects from heating.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 835.62-847.74 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 835.62-847.74 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale
Cite This Study
Unknown (2001). Radiat Res 156:328-332, 2001.
Show BibTeX
@article{radiat_res_156328_332_2001_ce2901,
  author = {Unknown},
  title = {Radiat Res 156:328-332, 2001},
  year = {2001},
  doi = {10.1667/0033-7587(2001)156[0328:MODDIM]2.0.CO;2},
  
}

Quick Questions About This Study

No, this study found no DNA strand breaks in mouse fibroblast cells exposed to 847 MHz CDMA radiation for up to 24 hours at power levels of 3-5 W/kg using sensitive comet assay testing.
Researchers tested specific absorption rates between 3.2-5.1 W/kg, which is significantly higher than current US phone limits of 2 W/kg. No DNA damage was detected at any tested level.
No difference was found between FDMA (835.62 MHz) and CDMA (847.74 MHz) signals in causing DNA damage. Both early cell phone technologies showed no harmful genetic effects in laboratory tests.
This study tested exposure periods of 2, 4, and 24 hours with no DNA damage detected at any timepoint. Even allowing 4 hours recovery after exposure showed no delayed effects.
The comet assay is a highly sensitive laboratory test that detects DNA strand breaks by measuring how damaged genetic material spreads when subjected to electrical current, resembling a comet's tail shape.