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Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

DNA & Genetic Damage

Effects of 50 Hz magnetic fields on C-myc transcript levels in nonsynchronized and synchronized human cells

No Effects Found

Authors not listed · 1995

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50 Hz magnetic fields showed no effect on cancer-promoting gene activity in human cells, even at high exposure levels.

Plain English Summary

Summary written for general audiences

Researchers exposed human lymphoid cells and leukemic cells to 50 Hz magnetic fields at various strengths and durations to see if they would increase c-myc gene expression, which is linked to cancer development. The study found no significant changes in c-myc levels in either synchronized or non-synchronized cells, suggesting these power-line frequency fields don't promote cancer-related gene activity under these laboratory conditions.

Why This Matters

This 1995 study provides important reassurance about one specific mechanism by which power-line frequency EMFs might theoretically promote cancer. The researchers specifically chose cell types already damaged by viruses, making them more susceptible to potential cancer-promoting effects. The fact that even these vulnerable cells showed no response to 50 Hz fields at exposures ranging from 20 minutes to 72 hours suggests this particular pathway isn't a major concern.

What makes this study particularly relevant is its focus on 50 Hz fields, the exact frequency of electrical power systems in Europe and many other countries (60 Hz in North America). The exposure levels tested ranged from 10 microtesla to 1 millitesla, covering everything from typical household exposures to occupational levels near power equipment. While this study addresses just one potential biological mechanism, it adds to a growing body of evidence suggesting that power-frequency EMFs don't directly activate cancer-promoting genes in human cells.

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 (1995). Effects of 50 Hz magnetic fields on C-myc transcript levels in nonsynchronized and synchronized human cells.
Show BibTeX
@article{effects_of_50_hz_magnetic_fields_on_c_myc_transcript_levels_in_nonsynchronized_and_synchronized_human_cells_ce1598,
  author = {Unknown},
  title = {Effects of 50 Hz magnetic fields on C-myc transcript levels in nonsynchronized and synchronized human cells},
  year = {1995},
  doi = {10.1002/BEM.2250160502},
  
}
DOI: 10.1002/BEM.2250160502PubMed: 8554627

Quick Questions About This Study

No, this study found no increase in c-myc oncogene expression in human lymphoid or leukemic cells exposed to 50 Hz magnetic fields at various strengths and durations, suggesting these power-line frequencies don't directly activate cancer-promoting genetic pathways.
Even in human cells already damaged by Epstein-Barr virus, which makes them more susceptible to cancer development, 50 Hz magnetic field exposure produced no significant changes in cancer-related gene expression compared to unexposed control cells.
Researchers tested 50 Hz magnetic fields at 10 microtesla and 1 millitesla for exposure periods ranging from 20 minutes to 72 hours, covering both typical household and high occupational exposure scenarios without finding effects.
No, cells synchronized in the G0/G1 phase of their cell cycle showed the same lack of response to 50 Hz magnetic field exposure as non-synchronized cells, indicating no special vulnerability during specific cell cycle phases.
HL60 leukemic cells showed no greater sensitivity to 50 Hz magnetic field exposure than normal lymphoid cells, with neither cell type showing significant changes in c-myc oncogene expression under any tested exposure conditions.