8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body
Brain & Nervous System165 citations

Melatonin reduces oxidative stress induced by chronic exposure of microwave radiation from mobile phones in rat brain.

Bioeffects Seen

Sokolovic D, Djindjic B, Nikolic J, Bjelakovic G, Pavlovic D, Kocic G, Krstic D, Cvetkovic T, Pavlovic V · 2008

View Original Abstract
Share:

Mobile phone radiation caused measurable brain damage in rats at typical exposure levels, but melatonin provided partial protection.

Plain English Summary

Summary written for general audiences

Researchers exposed rats to mobile phone radiation at levels similar to human exposure for up to 60 days and found significant brain damage from oxidative stress - essentially, cellular damage from harmful molecules. When rats were given melatonin (a natural hormone), it partially protected their brains from this radiation damage. This suggests that mobile phone radiation can harm brain cells through oxidative stress, and that melatonin might offer some protection.

Why This Matters

This study provides compelling evidence that mobile phone radiation causes measurable brain damage through oxidative stress, even at relatively low exposure levels. The SAR values used (0.043-0.135 W/kg) fall within the range of typical mobile phone emissions, making these findings directly relevant to everyday users. What makes this research particularly significant is the demonstration that melatonin offered partial protection against the radiation damage. This suggests the biological mechanisms are well understood and potentially addressable. The science demonstrates that prolonged exposure to mobile phone radiation creates an environment of chronic oxidative stress in brain tissue. Put simply, your brain cells are being damaged by the radiation from your phone, and this damage accumulates over time. While melatonin showed promise as a protective agent, the reality is that prevention through reduced exposure remains the most reliable approach to protecting your brain health.

Exposure Details

SAR
0.043-0.135 W/kg
Exposure Duration
20, 40 and 60 days

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.043-0.135 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Severe Concern rangeFCC limit is 37x higher than this level

Study Details

The aim of the study was to evaluate the intensity of oxidative stress in the brain of animals chronically exposed to mobile phones and potential protective effects of melatonin in reducing oxidative stress and brain injury.

Experiments were performed on Wistar rats exposed to microwave radiation during 20, 40 and 60 days. ...

A significant increase in the brain tissue malondialdehyde (MDA) and carbonyl group concentration wa...

We demonstrated two important findings; that mobile phones caused oxidative damage biochemically by increasing the levels of MDA, carbonyl groups, XO activity and decreasing CAT activity; and that treatment with the melatonin significantly prevented oxidative damage in the brain.

Cite This Study
Sokolovic D, Djindjic B, Nikolic J, Bjelakovic G, Pavlovic D, Kocic G, Krstic D, Cvetkovic T, Pavlovic V (2008). Melatonin reduces oxidative stress induced by chronic exposure of microwave radiation from mobile phones in rat brain. J Radiat Res (Tokyo). 49(6):579-586, 2008.
Show BibTeX
@article{d_2008_melatonin_reduces_oxidative_stress_1333,
  author = {Sokolovic D and Djindjic B and Nikolic J and Bjelakovic G and Pavlovic D and Kocic G and Krstic D and Cvetkovic T and Pavlovic V},
  title = {Melatonin reduces oxidative stress induced by chronic exposure of microwave radiation from mobile phones in rat brain.},
  year = {2008},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/18827438/},
}
PubMed: 18827438

Cited By (165 papers)

View all 165 citing papers on Semantic Scholar

Quick Questions About This Study

Yes, melatonin significantly protected rat brains from mobile phone radiation damage in this 2008 study. Rats given melatonin showed reduced oxidative stress markers after 40 days of exposure, suggesting this natural hormone may help prevent cellular damage from phone radiation in brain tissue.
After 60 days of mobile phone radiation exposure, rat brain cells showed significant damage from oxidative stress. The study found increased harmful molecules (MDA and carbonyl groups) and disrupted antioxidant enzymes, indicating chronic phone radiation exposure causes measurable cellular damage in brain tissue.
Yes, mobile phone radiation significantly increased oxidative stress in rat brain tissue. The 2008 study found elevated levels of MDA (a damage marker) and carbonyl groups, plus disrupted antioxidant enzyme activity, demonstrating that phone radiation causes harmful molecular changes in brain cells.
Mobile phone radiation began damaging brain antioxidant systems within 40 days of exposure in this rat study. Researchers found decreased catalase activity and increased xanthine oxidase activity, indicating the brain's natural protective mechanisms become compromised with chronic phone radiation exposure.
Chronic mobile phone radiation exposure significantly increased two key brain damage markers: malondialdehyde (MDA) and carbonyl groups. These molecules indicate oxidative damage to brain cells, with levels rising progressively during the 60-day exposure period in this rat study.