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2.45GHz radiofrequency fields alter gene expression in cultured human cells.

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Lee S, Johnson D, Dunbar K, Dong H, Ge X, Kim YC, Wing C, Jayathilaka N, Emmanuel N, Zhou CQ, Gerber HL, Tseng CC, Wang SM · 2005

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WiFi-frequency radiation altered hundreds of genes in human cells without heating them, challenging current safety standards based solely on thermal effects.

Plain English Summary

Summary written for general audiences

Researchers exposed human immune cells to 2.45 GHz radiofrequency radiation (the same frequency used in WiFi and microwave ovens) for 2-6 hours and found it altered the activity of hundreds of genes. After just 2 hours, 221 genes changed their expression patterns, increasing to 759 genes after 6 hours. Importantly, genes related to cell death increased their activity while genes controlling normal cell division decreased, and this happened without any heating effects.

Why This Matters

This study provides compelling evidence that radiofrequency radiation affects cellular function at the most fundamental level - our DNA's instruction manual. The researchers used 2.45 GHz radiation, the exact frequency emitted by WiFi routers, Bluetooth devices, and microwave ovens that surround us daily. What makes this research particularly significant is that it demonstrates non-thermal effects - meaning the radiation altered gene expression without heating the cells, debunking the outdated assumption that only heating can cause biological harm. The fact that genes controlling cell death and cell division were affected raises important questions about long-term exposure consequences. While this was a laboratory study using cultured cells rather than living organisms, it adds to a growing body of research showing that our current safety standards, which only account for heating effects, may be inadequate to protect public health.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 2.45 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 2.45 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study. The study examined exposure from: 2.45 GHz Duration: 2 hours

Study Details

We address this issue by examining whether RF fields can cause changes in gene expression.

We used the pulsed RF fields at a frequency of 2.45 GHz that is commonly used in telecommunication t...

We observed that 221 genes altered their expression after a 2-h exposure. The number of affected gen...

These results indicate that the RF fields at 2.45 GHz can alter gene expression in cultured human cells through non-thermal mechanism.

Cite This Study
Lee S, Johnson D, Dunbar K, Dong H, Ge X, Kim YC, Wing C, Jayathilaka N, Emmanuel N, Zhou CQ, Gerber HL, Tseng CC, Wang SM (2005). 2.45GHz radiofrequency fields alter gene expression in cultured human cells. FEBS Lett. 579(21):4829-4836, 2005.
Show BibTeX
@article{s_2005_245ghz_radiofrequency_fields_alter_2345,
  author = {Lee S and Johnson D and Dunbar K and Dong H and Ge X and Kim YC and Wing C and Jayathilaka N and Emmanuel N and Zhou CQ and Gerber HL and Tseng CC and Wang SM},
  title = {2.45GHz radiofrequency fields alter gene expression in cultured human cells.},
  year = {2005},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/16107253/},
}
PubMed: 16107253

Cited By (97 papers)

View all 97 citing papers on Semantic Scholar

Quick Questions About This Study

A 2005 study found that 221 genes changed their expression patterns after just 2 hours of exposure to 2.45 GHz radiation (the same frequency as WiFi). The number increased dramatically to 759 affected genes after 6 hours of exposure.
Yes, researchers demonstrated that 2.45 GHz radiofrequency radiation altered gene expression in human immune cells through non-thermal mechanisms. The study found no significant increase in heat shock genes, proving the effects occurred without cellular heating.
Exposure to 2.45 GHz radiation (microwave oven frequency) increased the activity of genes related to cell death (apoptosis) while decreasing genes that control normal cell division. This occurred in cultured human immune cells without heating effects.
Gene expression changes begin within 2 hours of exposure to 2.45 GHz radiation. A 2005 study showed 221 genes were affected after 2 hours, with the number of altered genes more than tripling to 759 after 6 hours.
Yes, human immune cells showed significant genetic responses to 2.45 GHz radiation, the same frequency used by WiFi routers. The 2005 research found hundreds of genes changed their expression patterns, particularly those controlling cell death and division.