Study type: Medical/biological study (experimental study)

Evaluation of selected biochemical parameters in the saliva of young males using mobile phones med./bio.

Published in: Electromagn Biol Med 2015; 34 (1): 72-76

Aim of study (acc. to author)

The effects of exposure of young men to a 1800 MHz electromagnetic field (GSM) on antioxidative parameters in the saliva should be investigated.

Background/further details

Saliva samples were obtained from 12 healthy males immediately before exposure and after a 15 and 30 minutes call with a mobile phone.



Exposure Parameters
Exposure 1: 1,800 MHz
Modulation type: pulsed
Exposure duration: continuous for 30 minutes
  • SAR: 1.09 W/kg

Exposure 1

Main characteristics
Frequency 1,800 MHz
Exposure duration continuous for 30 minutes
Modulation type pulsed
Repetition frequency 217 Hz
Additional info

GSM - non-DTX

Exposure setup
Exposure source
Setup mobile phone had dimensions of 13.6 x 115.5 x 58.1 mm; subjects made a phone call
Measurand Value Type Method Mass Remarks
SAR 1.09 W/kg - - - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • before exposure
  • during exposure
  • after exposure

Main outcome of study (acc. to author)

The superoxide dismutase enzyme activity was significantly increased after a 15 minutes call compared to before. All other parameters did not show any significant differences between the different points in time.
The authors conclude that exposure to a 1800 MHz electromagnetic field (GSM) might influence antioxidative parameters in human saliva, what could be an indication for oxidative stress.

Study character:

Study funded by

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