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Oxidative Stress

The antioxidant effect of Green Tea Mega EGCG against electromagnetic radiation-induced oxidative stress in the hippocampus and striatum of rats.

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Ahmed NA, Radwan NM, Aboul Ezz HS, Salama NA. · 2017

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Cell phone-level radiation caused brain oxidative stress in rats, but green tea extract provided significant protection when taken preventively.

Plain English Summary

Summary written for general audiences

Researchers exposed rats to cell phone-level radiofrequency radiation (900 MHz) for 2-3 months and found it caused oxidative stress damage in brain regions critical for memory and movement. However, when rats were given green tea extract (EGCG) before or during radiation exposure, it significantly protected against this brain damage. The study suggests that antioxidants may help shield the brain from wireless radiation effects.

Why This Matters

This study adds to growing evidence that chronic radiofrequency exposure at levels similar to cell phone use can trigger oxidative stress in the brain. The SAR level used (1.245 W/kg) is within the range of typical mobile phone emissions during calls, making these findings directly relevant to human exposure. What makes this research particularly noteworthy is the protective effect of EGCG, a natural antioxidant found in green tea. The fact that preventive treatment worked better than post-exposure treatment suggests that oxidative damage from RF radiation may be cumulative and harder to reverse once established. While we shouldn't view any single supplement as a silver bullet, this research supports the broader principle that supporting your body's antioxidant defenses may help mitigate some EMF-related health risks.

Exposure Details

SAR
1.245 W/kg
Power Density
0.02 µW/m²
Source/Device
900 MHz modulated at 217 Hz
Exposure Duration
2 and 3 months

Exposure Context

This study used 0.02 µW/m² for radio frequency:

This study used 1.245 W/kg for SAR (device absorption):

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: 0.02 µW/m²Extreme Concern - 1,000 uW/m2FCC Limit - 10M uW/m2Effects observed in the No Concern rangeFCC limit is 500,000,000x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 217 Hz - 900 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 217 Hz - 900 MHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

The aim of the present study was to investigate the effect of EMR (frequency 900 MHz modulated at 217 Hz, power density 0.02 mW/cm2, SAR 1.245 W/kg) on different oxidative stress parameters in the hippocampus and striatum of adult rats.

This study also extends to evaluate the therapeutic effect of green tea mega EGCG on the previous pa...

EMR exposure resulted in oxidative stress in the hippocampus and striatum as evident from the distur...

This recommends the use of green tea before any stressor to attenuate the state of oxidative stress and stimulate the antioxidant mechanism of the brain.

Cite This Study
Ahmed NA, Radwan NM, Aboul Ezz HS, Salama NA. (2017). The antioxidant effect of Green Tea Mega EGCG against electromagnetic radiation-induced oxidative stress in the hippocampus and striatum of rats. Electromagn Biol Med. 36(1):63-73, 2017.
Show BibTeX
@article{na_2017_the_antioxidant_effect_of_797,
  author = {Ahmed NA and Radwan NM and Aboul Ezz HS and Salama NA.},
  title = {The antioxidant effect of Green Tea Mega EGCG against electromagnetic radiation-induced oxidative stress in the hippocampus and striatum of rats.},
  year = {2017},
  doi = {10.1080/15368378.2016.1194292},
  url = {https://www.tandfonline.com/doi/abs/10.1080/15368378.2016.1194292},
}
DOI: 10.1080/15368378.2016.1194292

Cited By (44 papers)

Quick Questions About This Study

Yes, green tea extract (EGCG) significantly protected rat brains from 900 MHz radiofrequency radiation damage in a 2017 study. Rats given EGCG before or during 2-3 months of exposure showed much less oxidative stress in memory and movement brain regions compared to unprotected rats.
A 2017 rat study found that 900 MHz radiofrequency radiation caused oxidative stress damage in the hippocampus after 2-3 months of exposure. This brain region is critical for memory formation, and the damage occurred at cell phone-level radiation frequencies.
Taking green tea EGCG before radiation exposure provides better protection than taking it after exposure begins. The 2017 study showed rats given EGCG at the start of 900 MHz exposure had significantly more brain protection than those treated after 2 months.
Yes, 900 MHz radiation modulated at 217 Hz disrupted antioxidant systems in rat brain regions after 2-3 months of exposure. The study found disturbed oxidant and antioxidant parameters in both the hippocampus and striatum, indicating compromised cellular defense mechanisms.
The hippocampus and striatum showed significant oxidative stress damage from 900 MHz radiation exposure in the 2017 rat study. These brain regions control memory formation and movement coordination respectively, making them critical targets for potential wireless radiation effects.