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[Effect of extremely high frequency electromagnetic radiation of low intensity on parameters of humoral immunity in healthy mice.]

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Lushnikov KV, Gapeev AB, Sadovnikov VB, Cheremis NK. · 2001

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Daily millimeter wave exposure for 20 days significantly reduced immune organ cell counts in mice, even at very low power levels.

Plain English Summary

Summary written for general audiences

Russian researchers exposed mice to 42 GHz radiation (millimeter waves like those in 5G) at low power levels. After 20 days of daily exposure, immune organs shrank significantly - the thymus by 17.5% and spleen by 14.5%, suggesting prolonged millimeter wave exposure may weaken immune system function.

Why This Matters

This study provides important evidence that millimeter wave frequencies, now widely deployed in 5G networks, can affect immune system organs even at extremely low power levels - just 0.15 mW/cm² (milliwatts per square centimeter). What makes this research particularly significant is that it demonstrates a clear dose-response relationship: single exposures caused no measurable effects, but chronic daily exposure for 20 days produced statistically significant immune system changes. The thymus, which produces T-cells crucial for immune function, was especially affected.

The power levels used in this study are actually lower than what you might experience from some wireless devices, yet the chronic exposure pattern mirrors how we actually use technology - not single exposures, but daily, repeated use over weeks, months, and years. The science demonstrates that your immune system may be responding to this radiation in ways that only become apparent with sustained exposure, highlighting why we need to consider cumulative effects rather than just acute exposure limits.

Exposure Details

Power Density
0.15 µW/m²
Source/Device
42.0 GHz
Exposure Duration
Once for 20 min, for 20 min daily during 5 and 20 successive days before immunization, and for 20 min daily during 5 successive days after immunization throughout the development of the humoral immune response.

Exposure Context

This study used 0.15 µW/m² for radio frequency:

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: 0.15 µW/m²Extreme Concern - 1,000 uW/m2FCC Limit - 10M uW/m2Effects observed in the Slight Concern rangeFCC limit is 66,666,667x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 42 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 42 GHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHzLogarithmic scale

Study Details

The modification of indices of the humoral immune response to thymus-dependent antigen (sheep erythrocytes) after a whole-body exposure of healthy mice to low-intensity extremely-high-frequency electromagnetic radiation was studied.

Male NMRI mice were exposed in the far-field zone of horn antenna at a frequency of 42.0 GHz and ene...

The indices of humoral immunity and cellularity of lymphoid organs changed insignificantly after acu...

The results show that low-intensity extremely-high-frequency electromagnetic radiation with the frequency and energy flux density used does not influence the humoral immune response intensity in healthy mice but influences immunogenesis under multiple repeated exposures.

Cite This Study
Lushnikov KV, Gapeev AB, Sadovnikov VB, Cheremis NK. (2001). [Effect of extremely high frequency electromagnetic radiation of low intensity on parameters of humoral immunity in healthy mice.] Biofizika 46(4):753-760, 2001.
Show BibTeX
@article{kv_2001_effect_of_extremely_high_1169,
  author = {Lushnikov KV and Gapeev AB and Sadovnikov VB and Cheremis NK.},
  title = {[Effect of extremely high frequency electromagnetic radiation of low intensity on parameters of humoral immunity in healthy mice.]},
  year = {2001},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/11558390/},
}
PubMed: 11558390

Cited By (18 papers)

Quick Questions About This Study

A 2001 Russian study found that 42 GHz millimeter waves (similar to 5G frequencies) caused immune organs to shrink in mice after 20 days of exposure. The thymus shrank 17.5% and spleen 14.5%, suggesting potential immune system impacts from prolonged exposure.
Research shows 42 GHz radiation can affect immune organs with repeated exposure. After 20 days of daily exposure, mice experienced significant shrinkage of the thymus (17.5%) and spleen (14.5%), key organs that produce immune cells.
Studies indicate millimeter wave radiation may impact immune function with prolonged exposure. While short-term exposure showed no effects, 20 days of 42 GHz exposure significantly reduced the size of immune organs in laboratory mice.
Extremely high frequency (EHF) radiation may pose immune system risks with chronic exposure. Research found 42 GHz radiation caused measurable shrinkage of immune organs after 20 days, though short-term exposure produced no significant changes.
Repeated EMF exposure can reduce lymphoid organ size according to research. Daily 42 GHz radiation exposure for 20 days caused the thymus to shrink 17.5% and spleen to shrink 14.5% in mice studies.