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GSM radiocellular telephones do not disturb the secretion of antepituitary hormones in humans.

No Effects Found

de Seze R, Fabbro-Peray P, Miro L · 1998

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One month of typical cell phone use didn't permanently alter hormone levels in healthy men, though temporary thyroid changes occurred.

Plain English Summary

Summary written for general audiences

French researchers exposed 20 healthy men to cell phone radiation for 2 hours daily over one month and measured six key hormones produced by the pituitary gland. They found no lasting changes in hormone levels, with only a temporary 21% decrease in thyroid-stimulating hormone that returned to normal after exposure ended. This suggests that typical cell phone use doesn't cause permanent disruption to the body's hormone control center.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 217 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 217 HzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

The study examined exposure from: 217 Hz Duration: 2 h/day, 5 days/wk, for 1 month

Study Details

An experiment was designed to evaluate the effect of a 900 MHz RF radiation emitted by a Global System for Mobile radiotelephone (217 Hz impulses, one-eighth duty cycle, 2 W peak power) on human endocrine functions.

Twenty healthy male volunteers aged from 19 to 40 were inducted in the present experiment. Each subj...

Results indicated that all hormone concentrations remained within normal physiologic ranges. A diffe...

Because this change recovered fully during the postexposure period, it is concluded that 1 month of intermittent exposures to RF radiation from a cellular telephone does not induce a long-lasting or cumulative effect on the hormone secretion rate of the anterior pituitary gland in humans.

Cite This Study
de Seze R, Fabbro-Peray P, Miro L (1998). GSM radiocellular telephones do not disturb the secretion of antepituitary hormones in humans. Bioelectromagnetics 19(5):271-278, 1998.
Show BibTeX
@article{r_1998_gsm_radiocellular_telephones_do_2999,
  author = {de Seze R and Fabbro-Peray P and Miro L},
  title = {GSM radiocellular telephones do not disturb the secretion of antepituitary hormones in humans.},
  year = {1998},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/9669541/},
}
PubMed: 9669541

Cited By (92 papers)

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Quick Questions About This Study

A 1998 French study found that 217 Hz GSM radiation does not significantly affect pituitary hormone levels. Twenty healthy men exposed to cell phone radiation for 2 hours daily over one month showed no lasting changes in six key hormones, with only temporary thyroid-stimulating hormone changes that recovered completely.
Research shows one month of daily 2-hour cell phone exposure does not cause permanent hormone disruption. French scientists found all six pituitary hormones remained within normal ranges, with only a temporary 21% decrease in thyroid-stimulating hormone that fully recovered after exposure ended.
GSM radiation does not cause lasting thyroid hormone changes according to 1998 research. While scientists observed a temporary 21% decrease in thyroid-stimulating hormone during exposure, levels returned to normal during the recovery period, indicating no permanent effects on thyroid function.
Intermittent phone radiation does not affect anterior pituitary gland function long-term. A controlled study exposing men to cell phone radiation for one month found no cumulative effects on hormone secretion rates, with all measured hormones staying within normal physiological ranges throughout testing.
Cell phone radiation effects on hormones are temporary and short-lived. The only hormone change observed in a month-long study was a brief decrease in thyroid-stimulating hormone that completely recovered during the post-exposure period, showing no lasting or cumulative hormonal effects.