8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body
Whole Body / General

SPECIFIC ABSORPTION RATES MEASURED IN RATS AND MICE EXPOSED TO 2450, 425 or 100 MHz RADIOFREQUENCY RADIATION

Bioeffects Seen

Authors not listed

Share:

EMF energy absorption in biological tissues varies dramatically by frequency, body size, and orientation.

Plain English Summary

Summary written for general audiences

Scientists measured how much radiofrequency energy mice and rats absorb when exposed to three different frequencies: 2450 MHz (microwave oven frequency), 425 MHz, and 100 MHz. Using precise calorimetry techniques, they found that energy absorption rates varied significantly based on the animal's size, body orientation, and the specific frequency used. This foundational research helps establish how biological tissues absorb EMF energy at different frequencies.

Why This Matters

This study represents crucial foundational science for understanding EMF exposure. The researchers measured specific absorption rates (SAR) at three key frequencies that span much of our everyday EMF environment. The 2450 MHz frequency is identical to what microwave ovens use, while 425 MHz falls within cellular communication bands. What makes this research particularly valuable is its methodological rigor using twin-well calorimetry, considered the gold standard for SAR measurements. The finding that absorption varies dramatically with frequency, body size, and orientation has direct implications for human exposure. When you consider that our bodies absorb EMF energy differently depending on these factors, it becomes clear why one-size-fits-all safety standards may be inadequate. This research laid important groundwork for understanding that EMF absorption isn't uniform across frequencies or body types.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (n.d.). SPECIFIC ABSORPTION RATES MEASURED IN RATS AND MICE EXPOSED TO 2450, 425 or 100 MHz RADIOFREQUENCY RADIATION.
Show BibTeX
@article{specific_absorption_rates_measured_in_rats_and_mice_exposed_to_2450_425_or_100_m_g7299,
  author = {Unknown},
  title = {SPECIFIC ABSORPTION RATES MEASURED IN RATS AND MICE EXPOSED TO 2450, 425 or 100 MHz RADIOFREQUENCY RADIATION},
  year = {n.d.},
  
  
}

Quick Questions About This Study

Scientists tested three specific frequencies: 2450 MHz (same as microwave ovens), 425 MHz (cellular communication range), and 100 MHz. These frequencies represent different parts of the radiofrequency spectrum commonly encountered in technology.
The study found that SAR values changed significantly based on whether animals were positioned differently during exposure. Body orientation affects how electromagnetic fields interact with tissues, creating varying absorption patterns throughout the body.
Twin-well calorimetry is a precise scientific technique that measures energy absorption by detecting temperature changes in exposed tissues. It's considered the gold standard method for determining how much EMF energy biological tissues actually absorb.
Scientists used an anechoic chamber for 2450 MHz testing and TEM transmission lines (Crawford Cells) for 425 MHz and 100 MHz exposures. Different frequencies require specialized equipment to ensure accurate, controlled exposure conditions.
The researchers found differences between actual measured SAR values and what theoretical models predicted. This highlights the importance of experimental validation rather than relying solely on computer modeling for EMF exposure assessment.