6,486 Studies Reviewed. 85.2% of Original Studies Found Biological Effects. The Evidence is Clear.

Changes in the dielectric properties of rat tissue as a function of age at microwave frequencies.

Bioeffects Seen

Peyman A, Rezazadeh AA, Gabriel C · 2001

View Original Abstract
Share:

The study found a general decrease in dielectric properties of rat tissues with age.

Plain English Summary

Summary written for general audiences

Researchers measured dielectric properties of ten rat tissues at six ages from 130 MHz to 10 GHz. Results showed a general decrease in dielectric properties with age. The decrease was more apparent in brain, skull, and skin tissues than in abdominal tissues. The variation was attributed to changes in water content and organic composition.

Why This Matters

The study aimed to investigate changes in dielectric properties of rat tissue as a function of age at microwave frequencies. Percentage decreases for certain tissues in 30 to 70 day old rats at cellular phone frequencies were tabulated. The data provide important input for rigorous dosimetry in lifetime-exposure animal experiments. Results also give insight into possible differences in exposure assessment for children.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 130 MHz - 10 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 130 MHz - 10 GHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study. The study examined exposure from: 130 MHz to 10 GHz

Study Details

To investigate the changes in the dielectric properties of rat tissue as a function of age at microwave frequencies

The dielectric properties of ten rat tissues at six different ages were measured at 37 degrees C in ...

The results show a general decrease of the dielectric properties with age. The trend is more apparen...

Cite This Study
Peyman A, Rezazadeh AA, Gabriel C (2001). Changes in the dielectric properties of rat tissue as a function of age at microwave frequencies. Phys Med Biol 46(6):1617-1629, 2001.
Show BibTeX
@article{a_2001_changes_in_the_dielectric_2523,
  author = {Peyman A and Rezazadeh AA and Gabriel C},
  title = {Changes in the dielectric properties of rat tissue as a function of age at microwave frequencies.},
  year = {2001},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/11419623/},
}

Cited By (264 papers)

Quick Questions About This Study

The study measured dielectric properties of ten rat tissues at six ages from 130 MHz to 10 GHz.
Dielectric properties generally decreased with age across rat tissues.
Brain, skull, and skin tissues showed a more apparent decrease than abdominal tissues.
The variation is due to changes in water content and organic composition of tissues.