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Extremely Low Frequency Electromagnetic Fields Decrease Serum Levels of Interleukin-17, Transforming Growth Factor-β and Downregulate Foxp3 Expression in the Spleen

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Authors not listed · 2018

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Power line frequency EMF suppressed key immune proteins at just 1 μT - levels common near household appliances.

Plain English Summary

Summary written for general audiences

Researchers exposed 80 male rats to 50 Hz electromagnetic fields at various intensities and found that low-level exposures (1 and 100 μT) significantly reduced immune system proteins IL-17 and TGF-β in blood, while also decreasing Foxp3 expression in the spleen. The study suggests that power line frequency EMF may suppress important immune regulatory mechanisms even at relatively low intensities.

Why This Matters

This study reveals concerning immune system effects from 50 Hz electromagnetic fields - the same frequency emitted by power lines and most household electrical systems. What makes these findings particularly significant is that immune suppression occurred at just 1 μT, a magnetic field strength you'd commonly encounter near electrical appliances or within about 150 feet of power lines. The researchers found decreased levels of key immune signaling proteins and reduced expression of Foxp3, a critical regulator of immune tolerance. This adds to mounting evidence that chronic ELF-EMF exposure may compromise immune function in ways we're only beginning to understand. The reality is that millions of people live and work in environments with magnetic field exposures at or above the levels shown to affect immune markers in this study.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 50 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 50 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2018). Extremely Low Frequency Electromagnetic Fields Decrease Serum Levels of Interleukin-17, Transforming Growth Factor-β and Downregulate Foxp3 Expression in the Spleen.
Show BibTeX
@article{extremely_low_frequency_electromagnetic_fields_decrease_serum_levels_of_interleukin_17_transforming_growth_factor_and_downregulate_foxp3_expression_in_the_spleen_ce4129,
  author = {Unknown},
  title = {Extremely Low Frequency Electromagnetic Fields Decrease Serum Levels of Interleukin-17, Transforming Growth Factor-β and Downregulate Foxp3 Expression in the Spleen},
  year = {2018},
  doi = {10.1089/jir.2018.0048},
  
}
DOI: 10.1089/jir.2018.0048PubMed: 30328796

Quick Questions About This Study

Yes, this rat study found that 50 Hz electromagnetic fields at intensities as low as 1 μT significantly decreased serum levels of IL-17 and TGF-β, important immune signaling proteins that regulate inflammatory responses and immune tolerance.
The study showed that 1 and 100 μT magnetic field exposures downregulated Foxp3 expression in the spleen. Foxp3 is a transcription factor critical for regulatory T cell function and immune system balance.
Yes, rats exposed to 2,000 μT magnetic fields showed significantly reduced thymus weight. The thymus is crucial for T cell development and immune system maturation, suggesting high-intensity EMF may cause structural immune organ damage.
The immune effects were measured after one month of continuous 50 Hz EMF exposure, followed by immunization and another month of exposure. This suggests that chronic rather than acute exposure is needed for measurable immune suppression.
Paradoxically, the lowest intensities (1 and 100 μT) showed the most consistent immune suppression effects on IL-17, TGF-β, and Foxp3 levels, while the highest intensity (2,000 μT) primarily affected thymus weight reduction.