Subjective symptoms among mobile phone users-A consequence of absorption of radiofrequency fields?

In a previous epidemiological study, where we studied the prevalence of subjective symptoms among mobile phone (MP) users, we found as an interesting side finding that the prevalence of many of the subjective symptoms increased with increasing calling time and number of calls per day. In this extrap...

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Bibliographic Details
Published in:Bioelectromagnetics 2003-04, Vol.24 (3), p.152-159
Main Authors: Wilén, Jonna, Sandström, Monica, Hansson Mild, Kjell
Format: Article
Language:English
Subjects:
Body Temperature - radiation effects
Cell Phone - classification
Cell Phone - instrumentation
cellular phone
Cohort Studies
Confusion - epidemiology
Confusion - etiology
Dizziness - epidemiology
Dizziness - etiology
Dose-Response Relationship, Radiation
Ear, External - radiation effects
Fatigue - epidemiology
Fatigue - etiology
Head - radiation effects
headache
Headache - epidemiology
Headache - etiology
Humans
Hypersensitivity
Microwaves - adverse effects
Norway - epidemiology
Prevalence
Radiation Injuries - epidemiology
Radiation Injuries - etiology
Radiometry - methods
SAR
specific absorption
Statistics as Topic
Sweden - epidemiology
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Summary:In a previous epidemiological study, where we studied the prevalence of subjective symptoms among mobile phone (MP) users, we found as an interesting side finding that the prevalence of many of the subjective symptoms increased with increasing calling time and number of calls per day. In this extrapolative study, we have selected 2402 people from the epidemiological study who used any of the four most common GSM MP. We used the information about the prevalence of symptoms, calling time per day, and number of calls per day and combined it with measurements of the Specific Absorption Rate (SAR). We defined three volumes in the head and measured the maximum SAR averaged over a cube of 1 g tissue (SAR1g) in each volume. Two new exposure parameters Specific Absorption per Day (SAD) and Specific Absorption per Call (SAC) have been devised and are obtained as combinations of SAR, calling time per day, and number of calls per day, respectively. The results indicates that SAR values >0.5 W/kg may be an important factor for the prevalence of some of the symptoms, especially in combination with long calling times per day. Bioelectromagnetics 24:152–159, 2003. © 2003 Wiley‐Liss, Inc.
ISSN:0197-8462
1521-186X
1521-186X
DOI:10.1002/bem.10101