8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body

Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

Brain & Nervous System

Effects of weak mobile phone - electromagnetic fields (GSM, UMTS) on well-being and resting EEG.

No Effects Found

Kleinlogel H, Dierks T, Koenig T, Lehmann H, Minder A, Berz R · 2008

View Original Abstract
Share:

This study found no immediate brain effects from 30-minute phone exposures, but doesn't address long-term cumulative impacts from daily use.

Plain English Summary

Summary written for general audiences

Swiss researchers exposed 15 healthy adults to mobile phone signals from both older GSM phones (900 MHz) and newer UMTS phones (1950 MHz) for 30 minutes to see if the radiation affected brain activity or how people felt. Using brain wave monitoring (EEG) and self-reported wellness measures, they found no significant changes compared to fake exposure sessions. This suggests that typical mobile phone radiation levels don't immediately alter brain function or cause noticeable symptoms in healthy users.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.95 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.95 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

The study examined exposure from: 1950 MHz UMTS Duration: 30 min

Study Details

To study the effects of weak mobile phone - electromagnetic fields (GSM, UMTS) on well-being and resting EEG

To date most studies have investigated Global System for Mobile Communications (GSM)-EMF and only ve...

Neither the UMTS- nor the GSM-EMF produced any significant changes in the measured parameters compar...

The results do not give any evidence for a deleterious effect of the EMF on normal healthy mobile phone users.

Cite This Study
Kleinlogel H, Dierks T, Koenig T, Lehmann H, Minder A, Berz R (2008). Effects of weak mobile phone - electromagnetic fields (GSM, UMTS) on well-being and resting EEG. Bioelectromagnetics. 29(6):479-487, 2008a.
Show BibTeX
@article{h_2008_effects_of_weak_mobile_2771,
  author = {Kleinlogel H and Dierks T and Koenig T and Lehmann H and Minder A and Berz R},
  title = {Effects of weak mobile phone - electromagnetic fields (GSM, UMTS) on well-being and resting EEG. },
  year = {2008},
  doi = {10.1002/bem.20419},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/bem.20419},
}
DOI: 10.1002/bem.20419

Cited By (59 papers)

View all 59 citing papers on Semantic Scholar

Quick Questions About This Study

Swiss researchers found that 30-minute exposure to UMTS 3G signals at 1950 MHz produced no significant changes in brain wave patterns (EEG) compared to fake exposure. The study monitored 15 healthy adults and detected no immediate alterations in brain electrical activity from typical 3G phone radiation levels.
A 2008 study exposed 15 healthy adults to both GSM and UMTS mobile phone signals for 30 minutes and found no significant changes in self-reported wellness measures. Participants didn't experience noticeable symptoms during actual radiation exposure compared to sham sessions, suggesting short-term exposure doesn't cause immediate discomfort.
Research by Kleinlogel and colleagues found that 30-minute exposure to GSM signals at 900 MHz produced no significant changes in brain wave activity or wellness measures in 15 healthy adults. The study suggests typical GSM phone radiation levels don't cause immediate alterations in normal brain function.
A Swiss study comparing GSM (900 MHz) and UMTS (1950 MHz) phone signals found no significant differences in brain wave patterns or wellness between either technology and fake exposure. Both 2G and 3G radiation levels appear to have no immediate detectable effects on healthy brain function.
According to 2008 research using EEG monitoring, neither GSM nor UMTS electromagnetic fields produced measurable changes in brain activity or self-reported wellness in 15 healthy adults during 30-minute exposures. The findings suggest no evidence for harmful immediate effects in normal mobile phone users.