Study type: Medical/biological study (experimental study)

Single-strand DNA breaks in human hair root cells exposed to mobile phone radiation. med./bio.

Published in: Int J Radiat Biol 2012; 88 (5): 420-424

Aim of study (acc. to author)

To study the short-term effects of radiofrequency exposure on DNA single-strand breaks in human hair root cells.

Background/further details

Hair samples were collected from eight healthy subjects (six women, two men) immediately before and after using a 900 MHz GSM mobile phone for 15 and 30 minutes (experiments were separated by two weeks).
About 6 or 7 hair roots were plucked behind the right ear (side of mobile phone exposure) within a 60 mm x 60 mm area. Additionally, the same subjects served as their own controls (hair samples were taken 5 and 15 minutes apart without exposure in between).

Endpoint

Exposure

Exposure Parameters
Exposure 1: 900 MHz
Exposure duration: continuous for 15 min or 30 min
  • power: 2 W maximum
  • SAR: 0.974 W/kg (in the head - manufacturer's data)

Exposure 1

Main characteristics
Frequency 900 MHz
Type
Exposure duration continuous for 15 min or 30 min
Exposure setup
Exposure source
Distance between exposed object and exposure source 1.5 cm
Setup handset fully charged before exposure; subjects held the mobile phone at the right ear and spoke into the phone's microphone
Parameters
Measurand Value Type Method Mass Remarks
power 2 W maximum - - -
SAR 0.974 W/kg - - partial body in the head - manufacturer's data

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

The data showed that exposure to a mobile phone for 15 or 30 minutes significantly increased DNA single-strand breaks in hair root cells close to the cell phone. Additionally, significantly more DNA single-strand breaks were found after 30 minutes than after 15 minutes of mobile phone use.
The authors conclude that a short-term mobile phone exposure (15 and 30 minutes) caused a significant increase in DNA single-strand breaks in human hair root cells located around the ear which was used for the mobile phone exposure.

Study character:

Study funded by

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