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Bioeffects induced by exposure to microwaves are mitigated by superposition of ELF noise.

Bioeffects Seen

Litovitz, TA, Penafiel, LM, Farrel, JM, Krause, D, Meister, R, Mullins, JM · 1997

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Adding electromagnetic 'noise' completely blocked cellular damage from cell phone radiation, suggesting protective technologies may be possible.

Plain English Summary

Summary written for general audiences

Researchers exposed cells to microwave radiation from cell phones and found it increased activity of an enzyme called ornithine decarboxylase, which is linked to cell growth and potentially cancer. However, when they added low-frequency electromagnetic 'noise' during the exposure, it completely blocked these cellular effects. This suggests that certain types of electromagnetic interference might actually protect cells from microwave damage.

Why This Matters

This study reveals something remarkable about how electromagnetic fields interact with living cells. The research demonstrates that cellular responses to microwave radiation aren't inevitable - they can be completely prevented by adding specific types of electromagnetic noise. The exposure levels used (2.5 W/kg SAR) are comparable to what your head absorbs during a typical cell phone call, making these findings directly relevant to everyday device use. What makes this research particularly significant is that it challenges the simple narrative that all EMF exposure is uniformly harmful. Instead, it suggests the biological effects depend heavily on the specific characteristics of the electromagnetic signal, including its modulation patterns and frequency components. This opens the door to potential protective technologies that could reduce biological impacts without eliminating the wireless signals we rely on.

Exposure Details

Magnetic Field
≥ 0.002, ≥ 0.005 mG
Source/Device
60 Hz or a 50 Hz
Exposure Duration
8 hours

Exposure Context

This study used ≥ 0.002, ≥ 0.005 mG for magnetic 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: ≥ 0.002, ≥ 0.005 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the No Concern rangeFCC limit is 1,000,000x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 50 Hz - 60 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 50 Hz - 60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

In the present study, we explore the possibility that similar inhibition techniques can be used to suppress the microwave response.

We concurrently exposed L929 cells to 60 Hz AM microwave fields or a 50 Hz burst-modulated DAMPS (Di...

In both cases, the ODC enhancement was found to decrease exponentially as a function of the noise ro...

These results suggest a possible practical means to inhibit biological effects from exposure to both ELF and microwave fields.

Cite This Study
Litovitz, TA, Penafiel, LM, Farrel, JM, Krause, D, Meister, R, Mullins, JM (1997). Bioeffects induced by exposure to microwaves are mitigated by superposition of ELF noise. Bioelectromagnetics 18(6):422-430, 1997.
Show BibTeX
@article{litovitz_1997_bioeffects_induced_by_exposure_1156,
  author = {Litovitz and TA and Penafiel and LM and Farrel and JM and Krause and D and Meister and R and Mullins and JM},
  title = {Bioeffects induced by exposure to microwaves are mitigated by superposition of ELF noise.},
  year = {1997},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/9261539/},
}
PubMed: 9261539

Cited By (74 papers)

View all 74 citing papers on Semantic Scholar

Quick Questions About This Study

Yes, research shows cell phone microwave radiation can increase ornithine decarboxylase enzyme activity in cells, which is linked to cell growth and potentially cancer development. However, adding low-frequency electromagnetic noise during exposure completely blocked these harmful cellular effects.
Microwave radiation from cell phones increases activity of ornithine decarboxylase, an enzyme that promotes cell growth and is associated with cancer risk. A 1997 study found this cellular effect could be completely prevented by adding specific electromagnetic noise during exposure.
Research suggests low-frequency electromagnetic noise can protect cells from microwave radiation damage. When scientists added 60 Hz or 50 Hz electromagnetic interference during cell phone exposure, it completely blocked the harmful increases in cellular enzyme activity.
Electromagnetic interference can actually protect against radiation damage. Studies show that adding low-frequency noise during microwave exposure prevents cellular changes linked to cancer risk. Complete protection occurred with noise levels at 2-5 microTesla depending on the radiation source.
Low-frequency electromagnetic noise effectively blocks biological effects from microwave radiation. Research found that 60 Hz or 50 Hz electromagnetic interference completely prevented cellular enzyme changes caused by cell phone radiation, suggesting a potential protective mechanism against EMF damage.