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The Effects of N-acetyl-L-cysteine and Epigallocatechin-3-gallate on Liver Tissue Protein Oxidation and Antioxidant Enzyme Levels After the Exposure to Radio Frequency Radiation.

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Ozgur E, Sahin D, Tomruk A, Guler G, Sepici-Dinçel A, Altan N, Seyhan N · 2015

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Cell phone-level radiation reduced protective liver enzymes in just seven days, while common antioxidants unexpectedly caused cellular damage.

Plain English Summary

Summary written for general audiences

Scientists exposed guinea pigs to cell phone radiation (900 MHz) for seven days and found it significantly reduced SOD, a protective antioxidant enzyme in liver tissue. Surprisingly, two common antioxidant supplements caused cellular damage when used alone, showing radiation's complex effects on cellular protection.

Why This Matters

This study adds to the growing body of evidence showing that radiofrequency radiation at levels typical of mobile phone use can disrupt cellular antioxidant systems. The 0.4 W/kg SAR used here falls within the range of everyday cell phone exposures, making these findings directly relevant to human health concerns. What makes this research particularly noteworthy is the finding that common antioxidant supplements like NAC and EGCG actually caused oxidative damage when used alone, suggesting that the cellular response to RF radiation is more complex than simple oxidative stress. The significant reduction in SOD enzyme activity demonstrates that even brief daily exposures can impair the liver's natural defense mechanisms against cellular damage. This research underscores why we need more comprehensive studies examining how RF radiation affects our body's protective systems, rather than dismissing concerns based on oversimplified heating models.

Exposure Details

SAR
0.4 W/kg
Source/Device
900 MHz GSM
Exposure Duration
10 or 20 min daily for consecutive 7 days

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.4 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern rangeFCC limit is 4x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 900 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 900 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

The widespread and sustained use of mobile and cordless phones causes unprecedented increase of radiofrequency radiation (RFR). The aim of this experimental study was to investigate the effect of 900 MHz Global System for Mobile Communications (GSM)-modulated RFR (average whole body Specific Absorption Rate (SAR) of 0.4 W/kg, 10 or 20 min daily for consecutive 7 days) to the liver tissue of guinea pigs and the protective effects of antioxidant treatments.

Adult male guinea pigs were randomly divided into nine groups as: Group I (sham/saline), Group II (s...

Significant decreases in the activities of SOD were observed in the liver of guinea pigs after RFR e...

Cite This Study
Ozgur E, Sahin D, Tomruk A, Guler G, Sepici-Dinçel A, Altan N, Seyhan N (2015). The Effects of N-acetyl-L-cysteine and Epigallocatechin-3-gallate on Liver Tissue Protein Oxidation and Antioxidant Enzyme Levels After the Exposure to Radio Frequency Radiation. Int J Radiat Biol.2015 Feb;91(2):187-93.
Show BibTeX
@article{e_2015_the_effects_of_nacetyllcysteine_1243,
  author = {Ozgur E and Sahin D and Tomruk A and Guler G and Sepici-Dinçel A and Altan N and Seyhan N},
  title = {The Effects of N-acetyl-L-cysteine and Epigallocatechin-3-gallate on Liver Tissue Protein Oxidation and Antioxidant Enzyme Levels After the Exposure to Radio Frequency Radiation.},
  year = {2015},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/25249432/},
}
PubMed: 25249432

Cited By (9 papers)

Quick Questions About This Study

Yes, a 2015 study found that seven days of 900 MHz GSM radiation exposure significantly reduced SOD (superoxide dismutase) activity in guinea pig liver tissue. SOD is a crucial protective antioxidant enzyme that helps defend cells against oxidative damage.
Research shows N-acetyl-L-cysteine (NAC) supplements actually increased protein damage markers in liver tissue when used alone during 900 MHz radiation exposure. This suggests antioxidant supplements may sometimes act as pro-oxidants under certain conditions.
A 2015 guinea pig study found EGCG (epigallocatechin-3-gallate) treatment alone elevated AOPP levels, indicating cellular damage. The researchers concluded that careful dosing and timing of EGCG supplements are needed when considering radiofrequency radiation exposure.
Guinea pig studies show that just seven days of 900 MHz GSM radiation exposure can significantly decrease SOD enzyme activity in liver tissue. This relatively short timeframe suggests the liver's antioxidant systems respond quickly to radiofrequency radiation.
Surprisingly, common antioxidant supplements NAC and EGCG caused cellular damage when used alone during 900 MHz exposure in guinea pigs. This demonstrates that antioxidants can exhibit pro-oxidant behavior, requiring careful consideration of dosage and timing.