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Influence of Electromagnetic Fields Emitted by GSM-900 Cellular Telephones on the Circadian Patterns of Gonadal, Adrenal and Pituitary Hormones in Men.

No Effects Found

Djeridane Y, Touitou Y, de Seze R. · 2008

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Cell phone radiation temporarily reduced key hormones by up to 28% in healthy men, raising questions about long-term cumulative effects.

Plain English Summary

Summary written for general audiences

French researchers exposed 20 healthy men to 900 MHz cell phone radiation for 2 hours daily over 4 weeks and measured their hormone levels around the clock. They found temporary decreases in growth hormone (28%) and cortisol (12%) during exposure, but these changes disappeared after stopping exposure and all hormone levels stayed within normal ranges. The study suggests that typical cell phone use may cause minor, reversible changes to certain hormones but doesn't disrupt the body's overall hormone system.

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

The study examined exposure from: 900 MHz GSM Duration: 2 h/day, 5 days/ week, for 4 weeks

Study Details

The present study investigated the effect of exposure to 900 MHz GSM radiofrequency radiation on steroid (cortisol and testosterone) and pituitary (thyroid-stimulating hormone, growth hormone, prolactin and adrenocorticotropin) hormone levels in 20 healthy male volunteers

Each subject was exposed to RF EMFs through the use of a cellular phone for 2 h/day, 5 days/ week, f...

All hormone concentrations remained within normal physiological ranges. The circadian profiles of pr...

Our data show that the 900 MHz EMF exposure, at least under our experimental conditions, does not appear to affect endocrine functions in men.

Cite This Study
Djeridane Y, Touitou Y, de Seze R. (2008). Influence of Electromagnetic Fields Emitted by GSM-900 Cellular Telephones on the Circadian Patterns of Gonadal, Adrenal and Pituitary Hormones in Men. Radiat Res. 169(3):337-343, 2008.
Show BibTeX
@article{y_2008_influence_of_electromagnetic_fields_3005,
  author = {Djeridane Y and Touitou Y and de Seze R.},
  title = {Influence of Electromagnetic Fields Emitted by GSM-900 Cellular Telephones on the Circadian Patterns of Gonadal, Adrenal and Pituitary Hormones in Men.},
  year = {2008},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/18302481/},
}
PubMed: 18302481

Cited By (74 papers)

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Quick Questions About This Study

A 2008 French study found that 900 MHz cell phone radiation caused temporary decreases in growth hormone (28%) and cortisol (12%) in men during exposure. However, these changes disappeared after stopping exposure and all hormone levels remained within normal ranges throughout the study.
Research shows that 900 MHz cell phone radiation does not disrupt testosterone levels in men. A controlled study exposing men to cell phone radiation for 2 hours daily over 4 weeks found no changes in testosterone's natural daily rhythm or overall levels.
GSM-900 radiation appears to have minimal impact on hormone systems. While one study found temporary decreases in growth hormone and cortisol during exposure, these effects were reversible and didn't affect other key hormones like testosterone, prolactin, or thyroid-stimulating hormone.
Cell phone radiation can temporarily reduce growth hormone levels by about 28% during active exposure. However, this decrease is reversible and growth hormone returns to normal levels once exposure stops, according to research on 900 MHz GSM radiation in healthy men.
Mobile phone radiation poses minimal hormone risks based on current research. A study found temporary decreases in growth hormone and cortisol during exposure, but these changes were reversible and all hormone levels stayed within normal healthy ranges throughout the study period.