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INFORMATION PROFILE - RADIOFREQUENCY AND MICROWAVE RADIATION

Bioeffects Seen

Science Information Services Department · 1978

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The profile states that in the United States radiofrequency and microwave radiation is considered a hazard only due to overheating of eyes, skin, and internal organs.

Plain English Summary

Summary written for general audiences

Rats exposed to pulsed radiofrequency or microwave frequencies for up to three hours a day over 0.5 to 6.0 months showed chemical and cellular blood changes, reduced cardiac, hepatic, and neural metabolism, hepatic histologic changes, and severe testicular damage. Mice exposed to 9 GHz for a few minutes a day for 59 weeks developed monocytic leukosis and myeloid leukemia three times as often as controls. Human studies included a Russian report that cardiovascular patients chronically exposed to microwave radiation did not improve after changing jobs, a Finnish study correlating a radar site with increased fatal heart attacks, and a study of 140 radio and television operators with at least 10 years exposure showing elevated alpha-globulin and total serum protein.

Why This Matters

Mutagenic effects included a synergistic effect of 37 GHz with chemical mutagens on Candida tropicalis, alteration of Drosophila germ cells by pulsed 5-40 MHz radiation, and mutation of Antirrhinum majus pollen by 200 MHz radiation. Chromosomal anomalies including fragmentation, translocation, and bridging were observed in guinea pig and rabbit cells pulsed with 2.95 GHz, and in Chinese hamster cells and bone marrow after pulsed 15, 19, 21, 25 MHz and non-pulsed 2.45 GHz. Clinical studies of 525 workers exposed to microwave radiation reported complaints of headache, tiredness, irritability, and sleepiness, with tests showing increased serum histamine, bradycardia, hypotension, desensitization to odors, hyperthyroid activity, exhaustion of the central nervous system, and disruption of the endocrine-humoral process. A study of 146 workers exposed to radiofrequency radiation reported headache, ECG changes, sleep upset, fatigue, neurological symptoms after over six years exposure, general weakness, balance disturbance, memory disturbance, and decreased sexual potency.

Exposure Details

Power Density
10 mW/cm²
Electric Field
200 V/m RMS

Exposure Context

This study used 10 mW/cm² for radio frequency:

This study used 200 V/m RMS for electric fields:

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 Exposure Level in ContextStudy Exposure Level in ContextThis study: 10 mW/cm²Extreme Concern - 1,000 µW/m²FCC Limit - 10M µW/m²Effects observed in the Extreme Concern range (Building Biology)This level is 10 times the FCC limit
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 100 kHz to 300 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 100 kHz to 300 GHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale
Cite This Study
Science Information Services Department (1978). INFORMATION PROFILE - RADIOFREQUENCY AND MICROWAVE RADIATION.
Show BibTeX
@article{information_profile_radiofrequency_and_microwave_radiation_g5172,
  author = {Science Information Services Department},
  title = {INFORMATION PROFILE - RADIOFREQUENCY AND MICROWAVE RADIATION},
  year = {1978},
  
  
}
No DOI on file for this study.

Quick Questions About This Study

Rats exposed for up to three hours a day over 0.5 to 6.0 months showed chemical and cellular blood changes, reduced cardiac, hepatic, and neural metabolism, hepatic histologic changes, and severe testicular damage.
A Finnish study reported a correlation between a Russian early warning radar site and increased fatal heart attacks, and a Russian study found cardiovascular patients chronically exposed to microwave radiation did not improve after changing jobs.
The study found no statistically or clinically meaningful correlation between microwave exposure for 1 to 35 years and lens opacities or other anomalies, and no clinically significant cataracts were reported.