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Using model organism Saccharomyces cerevisiae to evaluate the effects of ELF-MF and RF-EMF exposure on global gene expression.

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Chen G, Lu D, Chiang H, Leszczynski D, Xu Z · 2012

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Yeast cells showed virtually no gene changes from magnetic fields and minimal changes from radiofrequency radiation, suggesting limited cellular EMF effects.

Plain English Summary

Summary written for general audiences

Researchers exposed yeast cells to both 50 Hz magnetic fields and 1800 MHz radiofrequency radiation to see if electromagnetic fields could change gene activity. They found that magnetic fields caused no confirmed gene changes, while radiofrequency exposure affected only 2-5 genes out of thousands tested. This suggests that EMF effects on basic cellular processes may be more limited than some studies indicate.

Why This Matters

This study provides important context for understanding EMF bioeffects research. Using yeast as a model organism offers advantages because these cells share fundamental genetic machinery with human cells, yet are simpler to study systematically. The researchers found essentially no gene expression changes from 50 Hz magnetic field exposure at 0.4 mT (400 milliTesla) - a level roughly 1,000 times higher than typical household magnetic field exposures from appliances and wiring. The radiofrequency exposure at 4.7 W/kg produced minimal genetic changes, affecting fewer than 5 genes out of the thousands screened. What this means for you: while this single study cannot definitively rule out EMF bioeffects, it suggests that the cellular response to electromagnetic fields may be more limited than dramatic headlines often suggest. The science demonstrates that robust experimental design, including proper controls and confirmation testing, is essential for separating genuine bioeffects from experimental artifacts.

Exposure Details

Magnetic Field
0.4 mG
Source/Device
50 Hz ELF-MF
Exposure Duration
6h

Exposure Context

This study used 0.4 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: 0.4 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Slight Concern rangeFCC limit is 5,000x higher than this level
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

Study Details

The potential health hazard of exposure to electromagnetic fields (EMF) continues to cause public concern. However, the possibility of biological and health effects of exposure to EMF remains controversial and their biophysical mechanisms are unknown.

In the present study, we used Saccharomyces cerevisiae to identify genes responding to extremely low...

We were unable to confirm microarray-detected changes in three of the ELF-MF responsive candidate ge...

In conclusion, the results of this study suggest that the yeast cells did not alter gene expression in response to 50 Hz ELF-MF and that the response to RF-EMF is limited to only a very small number of genes. The possible biological consequences of the gene expression changes induced by RF-EMF await further investigation.

Cite This Study
Chen G, Lu D, Chiang H, Leszczynski D, Xu Z (2012). Using model organism Saccharomyces cerevisiae to evaluate the effects of ELF-MF and RF-EMF exposure on global gene expression. Bioelectromagnetics. 2012 Apr 9. doi: 10.1002/bem.21724.
Show BibTeX
@article{g_2012_using_model_organism_saccharomyces_2,
  author = {Chen G and Lu D and Chiang H and Leszczynski D and Xu Z},
  title = {Using model organism Saccharomyces cerevisiae to evaluate the effects of ELF-MF and RF-EMF exposure on global gene expression.},
  year = {2012},
  doi = {10.1002/bem.21724},
  url = {http://onlinelibrary.wiley.com/doi/10.1002/bem.21724/full},
}
DOI: 10.1002/bem.21724

Cited By (26 papers)

Quick Questions About This Study

Research using yeast cells found that 50 Hz magnetic fields caused no confirmed changes in gene expression. A 2012 study exposed cells to magnetic fields but couldn't verify any genetic alterations when using more precise testing methods, suggesting limited impact on basic cellular processes.
A study using 1800 MHz radiofrequency radiation (similar to cell phones) found effects on only 2-5 genes out of thousands tested in yeast cells. This suggests radiofrequency exposure has very limited impact on genetic activity, though researchers say more investigation is needed.
Research on 50 Hz electromagnetic fields (the type from power lines) found no confirmed genetic changes in laboratory cells. Scientists couldn't verify any gene expression alterations when they used precise testing methods, indicating minimal impact on cellular genetic processes.
A 2012 study found that magnetic field exposure caused no confirmed gene changes, while radiofrequency radiation affected only 2-5 genes out of thousands tested. This suggests EMF effects on gene activity are more limited than some studies indicate.
Laboratory research using yeast cells found minimal genetic effects from electromagnetic field exposure. Magnetic fields showed no confirmed gene changes, while radiofrequency radiation affected only a very small number of genes, suggesting limited genetic risk from typical EMF exposure levels.