Response, thermal regulatory threshold and thermal breakdown threshold of restrained RF-exposed mice at 905 MHz.
Ebert S, Eom SJ, Schuderer J, Apostel U, Tillmann T, Dasenbrock C, Kuster N. · 2005
View Original AbstractMice lost temperature control at RF exposures of 6-10 W/kg, levels higher than phones but showing clear thermal stress thresholds.
Plain English Summary
Researchers exposed mice to 905 MHz radiofrequency radiation at various power levels to determine when their bodies could no longer regulate temperature. They found that mice began struggling to maintain normal body temperature at radiation levels between 2-5 W/kg, and completely lost temperature control around 6-10 W/kg during 2-hour exposures.
Why This Matters
This study provides crucial data on thermal thresholds for RF exposure, establishing clear benchmarks for when electromagnetic radiation begins to overwhelm the body's natural temperature regulation systems. The thermal breakdown levels identified here (6-10 W/kg) are significantly higher than typical cell phone exposures (which average 1-2 W/kg), but the finding that thermal stress begins as low as 2 W/kg is noteworthy. What makes this research particularly valuable is its systematic approach to identifying both the initial thermal regulatory response and complete breakdown thresholds. The reality is that while these are animal studies under controlled conditions, they demonstrate measurable physiological impacts from RF exposure that occur through well-understood thermal mechanisms. For everyday device users, this research reinforces that SAR limits exist for good reason and that prolonged exposures at higher power levels can overwhelm biological systems.
Exposure Details
- SAR
- 0, 2, 5, 7.2, 10, 12.6 and 20 W/kg
- Source/Device
- 905 MHz
- Exposure Duration
- 2 Hours
Where This Falls on the Concern Scale
Study Details
The objective of this study was the determination of the thermal regulatory and the thermal breakdown thresholds for in-tube restrained B6C3F1 and NMRI mice exposed to radiofrequency electromagnetic fields at 905 MHz.
Different levels of the whole-body averaged specific absorption rate (SAR = 0, 2, 5, 7.2, 10, 12.6 a...
The thermal regulatory threshold of in-tube restrained mice was found at SAR levels between 2 W kg(-...
The presented data suggest that the thermal breakdown for in-tube restrained mice, whole-body exposed to radiofrequency fields, may occur at SAR levels of 6 W kg(-1)(K = 2) at laboratory conditions.
Show BibTeX
@article{s_2005_response_thermal_regulatory_threshold_959,
author = {Ebert S and Eom SJ and Schuderer J and Apostel U and Tillmann T and Dasenbrock C and Kuster N.},
title = {Response, thermal regulatory threshold and thermal breakdown threshold of restrained RF-exposed mice at 905 MHz.},
year = {2005},
url = {https://pubmed.ncbi.nlm.nih.gov/16237250/},
}