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Extremely low frequency electromagnetic fields activate the ERK cascade, increase hsp70 protein levels and promote regeneration in Planaria

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Reba Goodman, Avary Lin-Ye, Matthew S. Geddis, Priya J. Wickramaratne, Susan E. Hodge, Spiro P. Pantazatos, Martin Blank & Richard T. Ambron · 2009

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EMF exposure at 80 milliGauss activated cellular repair mechanisms in regenerating tissue, showing biological systems actively respond to electromagnetic fields.

Plain English Summary

Summary written for general audiences

Researchers exposed flatworms (planaria) to 60 Hz magnetic fields at 80 milliGauss for one hour twice daily during regeneration after being cut in half. The EMF-exposed worms regenerated faster than unexposed controls, with tail portions growing eyes 48 hours earlier and showing increased levels of stress proteins typically associated with healing and repair processes.

Why This Matters

This study demonstrates that extremely low frequency electromagnetic fields can accelerate biological repair mechanisms at the cellular level. The 80 milliGauss exposure used here is roughly 800 times stronger than typical household magnetic field levels (around 0.1 milliGauss), but it's within the range you might encounter very close to electrical appliances or power lines. What makes this research particularly significant is that it shows EMFs don't just cause biological effects - they can actually stimulate healing pathways and stress response proteins. The science demonstrates that living systems respond to EMF exposure by activating the same molecular cascades involved in injury repair, suggesting our bodies recognize these fields as a form of environmental stress requiring a cellular response.

Exposure Details

Magnetic Field
0.008 mG
Source/Device
60 Hz
Exposure Duration
1 h twice daily for 15 days

Exposure Context

This study used 0.008 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: 0.008 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the No Concern rangeFCC limit is 250,000x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 60 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

To use regenerating Planaria Dugesia dorotocethala as a model to determine whether an intermittent modulated extremely low frequency electro-magnetic field (ELF-EMF) produces elevated levels of the heat shock protein hsp70 and stimulates intracellular pathways known to be involved in injury and repair. We focused on serum response element (SRE) binding through the extra-cellular signal-regulated kinase (ERK) cascade.

Planaria were transected equidistant between the tip of the head and the tip of the tail. Individual...

ELF-EMF exposure during the initial 3-days post-surgery caused a significant increase in regeneratio...

Exposures to a modulated sinusoidal ELF-EMF were delivered by a Helmholtz configuration at a frequency of 60 Hz and 80 mG twice a day for one hour. This is accompanied by an increase in hsp70 protein levels, activation of specific kinases and upregulation of transcription factors that are generally associated with repair processes.

Cite This Study
Reba Goodman, Avary Lin-Ye, Matthew S. Geddis, Priya J. Wickramaratne, Susan E. Hodge, Spiro P. Pantazatos, Martin Blank & Richard T. Ambron (2009). Extremely low frequency electromagnetic fields activate the ERK cascade, increase hsp70 protein levels and promote regeneration in Planaria (2009) International Journal of Radiation Biology, 85:10, 851-859, DOI: 10.1080/09553000903072488.
Show BibTeX
@article{goodman_2009_extremely_low_frequency_electromagnetic_784,
  author = {Reba Goodman and Avary Lin-Ye and Matthew S. Geddis and Priya J. Wickramaratne and Susan E. Hodge and Spiro P. Pantazatos and Martin Blank & Richard T. Ambron},
  title = {Extremely low frequency electromagnetic fields activate the ERK cascade, increase hsp70 protein levels and promote regeneration in Planaria},
  year = {2009},
  doi = {10.1080/09553000903072488},
  url = {https://www.tandfonline.com/doi/abs/10.1080/09553000903072488},
}
DOI: 10.1080/09553000903072488

Cited By (71 papers)

View all 71 citing papers on Semantic Scholar

Quick Questions About This Study

Research shows 60 Hz magnetic fields can accelerate healing processes. A 2009 study found flatworms exposed to these fields regenerated 48 hours faster than unexposed controls, with increased stress proteins associated with tissue repair and cellular recovery mechanisms.
Power line frequency (60 Hz) radiation appears to stimulate cellular repair mechanisms. Laboratory research demonstrated that exposure to 80 milliGauss fields twice daily increased stress protein levels and activated molecular pathways typically involved in healing and regeneration processes.
Extremely low frequency EMFs may actually stimulate beneficial cellular responses in some contexts. Research found 60 Hz exposures increased heat shock proteins and activated repair pathways, suggesting these fields can trigger protective cellular mechanisms rather than cause damage.
Magnetic fields can accelerate tissue regeneration by activating specific cellular pathways. Studies show 60 Hz magnetic field exposure increases stress proteins like hsp70 and triggers molecular cascades associated with healing, leading to faster tissue repair and recovery.
60 Hz EMF exposure produces measurable biological effects including faster tissue regeneration, increased stress protein production, and activation of cellular repair pathways. Research demonstrates these fields can stimulate protective molecular responses rather than causing harmful cellular changes.