8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body
Cancer & Tumors

The Effects of Pulsed 860 MHz Radiofrequency Radiation on the Promotion of Neurogenic Tumors in Rats.

Bioeffects Seen

Zook BC,Simmens SJ. · 2006

View Original Abstract
Share:

This study found no evidence that 860 MHz radiofrequency radiation promoted brain tumor development in rats, though exposure levels weren't specified.

Plain English Summary

Summary written for general audiences

Researchers exposed 1,080 rats to pulsed 860 MHz radiofrequency radiation (similar to cell phone signals) for 6 hours daily to see if it would accelerate tumor development in animals already given a cancer-causing chemical. After examining over 1,200 brain and nervous system tumors, they found no evidence that RF exposure affected tumor incidence, growth rate, severity, or how quickly tumors appeared. This suggests that this particular RF signal did not act as a tumor promoter in this animal model.

Why This Matters

This study represents an important piece of the EMF-cancer puzzle, specifically addressing whether radiofrequency radiation acts as a tumor promoter rather than initiator. The researchers used a well-established two-stage cancer model, first exposing pregnant rats to a known carcinogen (ENU), then testing whether RF exposure would accelerate tumor development in their offspring. The 860 MHz frequency falls within the range used by cellular communications, making these findings relevant to everyday exposures. However, the study has significant limitations. The exposure levels aren't specified, making it impossible to compare with typical cell phone use. The exposure pattern (6 hours daily, 5 days weekly) may not reflect real-world usage patterns where people carry phones throughout the day. While these negative results are reassuring, they represent just one frequency, one exposure pattern, and one biological endpoint. The broader body of research on RF and cancer remains mixed, with some studies showing increased tumor risks and others finding no effects.

Exposure Information

Specific exposure levels were not quantified in this study.

Study Details

The present study was designed to investigate further any promoting effect of the pulsed RF signal on latency and other characteristics of neurogenic tumors in the progeny of pregnant rats treated with 6.25 or 10 mg/kg ENU

The resulting 1080 offspring were randomized equally by number, sex and ENU dose into pulsed RF, sha...

Postmortem examinations on the 1080 rats revealed 38 spinal cord tumors, 191 spinal nerve tumors, 23...

Cite This Study
Zook BC,Simmens SJ. (2006). The Effects of Pulsed 860 MHz Radiofrequency Radiation on the Promotion of Neurogenic Tumors in Rats. Radiat. Res. 165, 608-615, 2006.
Show BibTeX
@article{bc_2006_the_effects_of_pulsed_2717,
  author = {Zook BC andSimmens SJ.},
  title = {The Effects of Pulsed 860 MHz Radiofrequency Radiation on the Promotion of Neurogenic Tumors in Rats.},
  year = {2006},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/16669743/},
}
PubMed: 16669743

Cited By (43 papers)

Quick Questions About This Study

No, a 2006 study exposing 1,080 rats to pulsed 860 MHz RF radiation for 6 hours daily found no evidence that this frequency accelerated brain tumor development, growth rate, or severity in animals already given cancer-causing chemicals.
Research using 860 MHz pulsed RF radiation (similar to cell phone signals) found no effect on spinal cord or spinal nerve tumor incidence, malignancy, or growth characteristics after examining over 1,200 neurogenic tumors in exposed rats.
Researchers exposed 1,080 rats to pulsed 860 MHz radiofrequency radiation for 6 hours daily in this tumor promotion study, examining whether prolonged RF exposure would accelerate cancer development in animals pre-treated with carcinogenic chemicals.
Scientists examined 823 brain tumors, 232 cranial nerve tumors, 191 spinal nerve tumors, and 38 spinal cord tumors from rats exposed to 860 MHz pulsed radiation, finding no RF-related changes in any neurogenic tumor characteristics.
No, the 2006 rat study found that pulsed 860 MHz RF exposure did not affect tumor latency (how quickly tumors appeared) or any other timing factors related to neurogenic tumor development in cancer-prone animals.