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Prevention of mobile phone induced skin tissue changes by melatonin in rat: an experimental study.

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Ozguner F, Aydin G, Mollaoglu H, Gokalp O, Koyu A, Cesur G. · 2004

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Cell phone radiation at legal exposure levels caused measurable skin tissue damage in rats, but melatonin supplementation prevented most changes.

Plain English Summary

Summary written for general audiences

Researchers exposed rats to cell phone radiation at 900 MHz for 30 minutes daily over 10 days and found it caused visible changes to skin tissue, including thickening, cell damage, and altered collagen structure. When rats were given melatonin (a natural hormone) before radiation exposure, most of these skin changes were prevented. This suggests that cell phone radiation can affect skin health, but protective measures may be possible.

Why This Matters

This study adds to growing evidence that radiofrequency radiation affects biological tissues beyond just heating effects. The 900 MHz frequency tested matches older GSM cell phone technology, and the SAR level of 2 W/kg is within current safety limits but represents significant exposure during a phone call held against the skin. What makes this research particularly noteworthy is the protective effect of melatonin, suggesting the damage may be mediated through oxidative stress pathways. While we can't directly extrapolate rat skin findings to humans, the study demonstrates that RF radiation at legally permissible levels causes measurable biological changes. The reality is that your skin is your largest organ and often the closest point of contact with wireless devices, making these findings relevant to daily device use patterns.

Exposure Details

SAR
2 W/kg
Power Density
1 µW/m²
Source/Device
900 MHz
Exposure Duration
10 days (30 min/day)

Exposure Context

This study used 1 µW/m² for radio frequency:

This study used 2 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: 1 µW/m²Extreme Concern - 1,000 uW/m2FCC Limit - 10M uW/m2Effects observed in the Slight Concern rangeFCC limit is 10,000,000x 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 aim of this study was to investigate the effects the 900 MHz electromagnetic irradiation emitted by these devices on the induction of histopathologic changes in skin and the effect of melatonin (Mel) on any of these changes

Thirty male Wistar-Albino rats were used in the study. The experimental groups were composed of: a n...

Histopathologic changes in skin were analyzed. In the IR group, increased thickness of stratum corne...

Furthermore, melatonin treatment can reduce these changes and may have a beneficial effect to prevent 900 MHz mobile phone-induced rat skin changes.

Cite This Study
Ozguner F, Aydin G, Mollaoglu H, Gokalp O, Koyu A, Cesur G. (2004). Prevention of mobile phone induced skin tissue changes by melatonin in rat: an experimental study. Toxicol Ind Health. 20(6-10):133-139, 2004.
Show BibTeX
@article{f_2004_prevention_of_mobile_phone_560,
  author = {Ozguner F and Aydin G and Mollaoglu H and Gokalp O and Koyu A and Cesur G.},
  title = {Prevention of mobile phone induced skin tissue changes by melatonin in rat: an experimental study.},
  year = {2004},
  doi = {10.1191/0748233704th207oa},
  url = {https://journals.sagepub.com/doi/abs/10.1191/0748233704th207oa},
}
DOI: 10.1191/0748233704th207oa

Cited By (54 papers)

View all 54 citing papers on Semantic Scholar

Quick Questions About This Study

Research shows cell phone radiation at 900 MHz can cause skin tissue changes in laboratory studies. A 2004 study found that daily exposure led to skin thickening, cell damage, and altered collagen structure in rats after just 10 days of exposure.
Yes, studies indicate phone radiation can impact collagen structure. Research found that 900 MHz radiation caused impaired collagen distribution and separation of collagen bundles in skin tissue, though these effects were largely preventable with antioxidant treatment.
Laboratory studies suggest 900 MHz radiation can cause mild skin changes including tissue thickening and cellular damage. However, research also shows these effects may be preventable with protective measures like antioxidant supplementation such as melatonin.
Cell phone radiation exposure may cause skin tissue thickening, cellular damage, and changes to collagen structure based on animal studies. These effects occurred with daily 30-minute exposures over 10 days at typical phone frequencies.
Research suggests melatonin may offer protection against phone radiation effects on skin. A study found that melatonin treatment prevented most radiation-induced skin changes, including tissue damage and collagen disruption, in laboratory conditions.