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Oxidative Damage in the Kidney Induced by 900-MHz-Emitted Mobile Phone: Protection by Melatonin

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Oktem F, Ozguner F, Mollaoglu H, Koyu A, Uz E. · 2005

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Cell phone radiation caused measurable kidney damage in rats after just 10 days of exposure, but natural melatonin completely prevented the harm.

Plain English Summary

Summary written for general audiences

Researchers exposed rats to 900 MHz cell phone radiation for 30 minutes daily over 10 days and found significant kidney damage, including increased oxidative stress markers and reduced antioxidant defenses. The study also showed that melatonin (a natural hormone) completely protected against this kidney damage when given before radiation exposure. This suggests that cell phone radiation can harm organs beyond the brain, particularly the kidneys which absorb radiation when phones are carried on belts or in pockets.

Why This Matters

This study adds important evidence to our understanding of EMF health effects beyond the brain and reproductive organs. The researchers chose to focus on kidneys because these organs absorb significant radiation when phones are carried on belts or in pockets - a common practice that most people never consider risky. The 900 MHz frequency used matches older 2G networks, though modern phones operate across multiple frequency bands including this range. What makes this research particularly compelling is the clear biological mechanism shown: the radiation triggered oxidative stress, overwhelming the body's natural antioxidant defenses and causing measurable kidney damage. The fact that melatonin completely prevented this damage suggests the harm is real and preventable, not just statistical noise. This study joins a growing body of evidence showing that EMF exposure can damage organs throughout the body through oxidative stress pathways.

Exposure Information

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

Specific exposure levels were not quantified in this study. The study examined exposure from: 900 MHz Duration: 30 min/day for 10 days

Study Details

The aim of this study was to examine 900-MHz mobile phone-induced oxidative stress that promotes production of reactive oxygen species (ROS) on renal tubular damage and the role of melatonin on kidney tissue against possible oxidative damage in rats.

The animals were randomly grouped as follows: 1) sham-operated control group and 2) study groups: i)...

In the EMR-exposed group, while tissue MDA and urine NAG levels increased, SOD, CAT, and GSH-Px acti...

These results show that melatonin may exhibit a protective effect on mobile phone-induced renal impairment in rats.

Cite This Study
Oktem F, Ozguner F, Mollaoglu H, Koyu A, Uz E. (2005). Oxidative Damage in the Kidney Induced by 900-MHz-Emitted Mobile Phone: Protection by Melatonin Arch Med Res. 36(4):350-355, 2005.
Show BibTeX
@article{f_2005_oxidative_damage_in_the_1683,
  author = {Oktem F and Ozguner F and Mollaoglu H and Koyu A and Uz E.},
  title = {Oxidative Damage in the Kidney Induced by 900-MHz-Emitted Mobile Phone: Protection by Melatonin},
  year = {2005},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/15950073/},
}
PubMed: 15950073

Cited By (233 papers)

View all 233 citing papers on Semantic Scholar

Quick Questions About This Study

Yes, a 2005 study found that 30 minutes of daily 900 MHz cell phone radiation exposure for 10 days caused significant kidney damage in rats, including increased oxidative stress markers and reduced antioxidant defenses. This suggests kidneys absorb radiation when phones are carried on belts or in pockets.
Yes, the same study showed that melatonin completely protected rat kidneys against 900 MHz cell phone radiation damage. When given before radiation exposure, melatonin reversed all harmful effects including oxidative stress markers and restored normal antioxidant enzyme activity in kidney tissue.
Research shows kidney damage can occur after just 10 days of 30-minute daily exposure to 900 MHz cell phone radiation. The study found significant increases in kidney damage markers and decreases in protective antioxidant enzymes after this relatively short exposure period.
The 2005 study found that 900 MHz cell phone radiation significantly reduced three key antioxidant enzymes in rat kidneys: SOD (superoxide dismutase), CAT (catalase), and GSH-Px (glutathione peroxidase). These enzymes normally protect cells from oxidative damage caused by free radicals.
Research suggests yes - a study on 900 MHz radiation found significant kidney damage in rats, indicating that organs can be harmed when phones are carried on belts or in pockets near the body, not just brain tissue near the head during calls.