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Analgetic effects of non-thermal GSM-1900 radiofrequency electromagnetic fields in the land snail Helix pomatia.

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Nittby H, Moghadam MK, Sun W, Malmgren L, Eberhardt J, Persson BR, Salford LG · 2012

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Cell phone radiation altered pain sensitivity in snails at exposure levels similar to typical phone use, suggesting EMF can affect nervous system function.

Plain English Summary

Summary written for general audiences

Swedish researchers exposed land snails to cell phone radiation at 1900 MHz (the same frequency used by many mobile phones) for one hour, then tested their response to painful heat. The radiation-exposed snails showed significantly reduced sensitivity to pain compared to unexposed snails, suggesting the electromagnetic fields had an anesthetic-like effect on their nervous systems.

Why This Matters

This study reveals something remarkable: radiofrequency radiation at levels similar to cell phone emissions can alter pain perception in living organisms. The exposure level of 48 milliwatts per kilogram is well within the range of what your body absorbs during typical cell phone use. While snails may seem far removed from human health concerns, their nervous systems share fundamental biological processes with ours. The finding that RF radiation can modify pain sensitivity raises important questions about how these fields might be affecting our own neurological functions in ways we haven't yet recognized. The reality is that if electromagnetic fields can measurably alter nervous system responses in one species, we should take seriously the possibility they're doing the same in humans.

Exposure Details

Magnetic Field
0.000 2 mG
SAR
0.048 W/kg
Power Density
0.068 µW/m²
Electric Field
16 V/m
Source/Device
1900 MHz
Exposure Duration
1 h

Exposure Context

This study used 0.068 µW/m² for radio frequency:

This study used 16 V/m for electric fields:

This study used 0.000 2 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: 0.068 µW/m²Extreme Concern - 1,000 uW/m2FCC Limit - 10M uW/m2Effects observed in the No Concern rangeFCC limit is 147,058,824x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.90 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.90 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

To investigate whether mobile phone radiation might affect snail nociception, employing radiofrequency (RF) electromagnetic fields (EMF) which, to our knowledge, have hitherto not been studied in a snail model. Exposure to extremely low frequency (ELF) magnetic fields has however been shown to significantly affect nociceptive responses.

In the present study, we exposed 29 land snails of the strain Helix pomatia to global system for mob...

Comparing the reaction pattern of each snail before and after exposure, the GSM-exposed snails were ...

This study might support earlier findings, describing beneficial effects of EMF exposure upon nociception.

Cite This Study
Nittby H, Moghadam MK, Sun W, Malmgren L, Eberhardt J, Persson BR, Salford LG (2012). Analgetic effects of non-thermal GSM-1900 radiofrequency electromagnetic fields in the land snail Helix pomatia. Int J Radiat Biol. 88(3):245-252, 2012.
Show BibTeX
@article{h_2012_analgetic_effects_of_nonthermal_160,
  author = {Nittby H and Moghadam MK and Sun W and Malmgren L and Eberhardt J and Persson BR and Salford LG},
  title = {Analgetic effects of non-thermal GSM-1900 radiofrequency electromagnetic fields in the land snail Helix pomatia.},
  year = {2012},
  doi = {10.3109/09553002.2012.644257},
  url = {https://www.tandfonline.com/doi/abs/10.3109/09553002.2012.644257},
}
DOI: 10.3109/09553002.2012.644257

Cited By (12 papers)

View all 12 citing papers on Semantic Scholar

Quick Questions About This Study

Swedish research found that 1900 MHz cell phone radiation significantly reduced pain sensitivity in land snails after one hour of exposure. The electromagnetic fields produced an anesthetic-like effect on their nervous systems, suggesting radiofrequency radiation can alter pain perception in biological organisms.
Yes, a 2012 study showed 1900 MHz radiation (common in mobile phones) affected nervous system function in land snails. The exposed snails demonstrated significantly reduced sensitivity to thermal pain, indicating the electromagnetic fields had measurable effects on nerve response and pain processing.
Research shows mixed effects. One study found 1900 MHz cell phone radiation actually reduced pain sensitivity in snails, creating an anesthetic-like effect rather than causing harm. However, this represents just one biological response, and effects may vary across different organisms and exposure conditions.
A controlled study found that one hour of 1900 MHz radiofrequency exposure significantly reduced pain sensitivity in land snails compared to unexposed controls. The electromagnetic fields appeared to interfere with normal pain signaling pathways, creating an analgesic or numbing effect on the nervous system.
Research demonstrates GSM radiation at 1900 MHz can produce measurable biological effects, including altered pain sensitivity in living organisms. Swedish scientists found exposed snails showed significantly reduced responses to painful heat stimuli, indicating electromagnetic fields can influence nervous system function and sensory processing.