Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.
The Effects of 860 MHz Radiofrequency Radiation on the Induction or Promotion of Brain Tumors and Other Neoplasms in Rats.
Zook BC, Simmens SJ, · 2001
View Original AbstractThis comprehensive rat study found no increased brain tumor risk from 860 MHz radiation at phone-level exposures over nearly two years.
Plain English Summary
Researchers exposed rats to 860 MHz radiofrequency radiation for up to 22 months to see if it could cause or accelerate brain tumors. The study found no statistically significant increase in brain tumors or other cancers from the RF exposure, even when combined with a known cancer-causing chemical. This was a large, well-controlled study using 900 rats with extensive tissue analysis.
Why This Matters
This 2001 study represents one of the more comprehensive long-term investigations into RF radiation and cancer risk, using a frequency close to early cellular phone bands. The researchers used a robust experimental design, exposing 900 rats to 860 MHz radiation at 1.0 W/kg SAR (specific absorption rate) - a level comparable to what your brain might absorb during a lengthy phone call held directly to your head. Importantly, they tested whether RF could both initiate tumors and promote existing cancer development. The science demonstrates no significant tumor promotion even when combined with a known carcinogen. While this study provides reassuring data about RF exposure at these levels, it's worth noting that 860 MHz represents just one frequency in a complex electromagnetic spectrum. What this means for you is that this research contributes to a mixed body of evidence on RF and cancer, with some studies showing effects and others, like this one, showing none.
Exposure Details
- SAR
- 1 W/kg
- Source/Device
- 860 MHz
Exposure Context
This study used 1 W/kg for SAR (device absorption):
- 2.5x above the Building Biology guideline of 0.4 W/kg
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 Details
The Effects of 860 MHz Radiofrequency Radiation on the Induction or Promotion of Brain Tumors and Other Neoplasms in Rats.
Sprague-Dawley rats were irradiated with a continuous- wave (CW) or a pulsed-wave (P) radiofrequency...
There was no statistically significant evidence that the PRF or CWRF induced neoplasia in any tissue...
No statistically significant differences were related to the PRF or CWRF compared to controls in the low- or zero-dose groups regarding tumors of any kind.
Show BibTeX
@article{bc_2001_the_effects_of_860_3508,
author = {Zook BC and Simmens SJ and},
title = {The Effects of 860 MHz Radiofrequency Radiation on the Induction or Promotion of Brain Tumors and Other Neoplasms in Rats.},
year = {2001},
url = {https://meridian.allenpress.com/radiation-research/article-abstract/155/4/572/331472/The-Effects-of-860-MHz-Radiofrequency-Radiation-on},
}