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Zwitsers Onderzoek UMTS
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07.06.2006
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Background
Radio-frequency electromagnetic fields (RF EMF) of mobile communication systems are
widespread in the living environment, yet their effects on humans are uncertain despite a
growing body of literature.
Objectives
We investigated the influence of a Universal Mobile Telecommunication System (UMTS)
base station-like signal on well being and cognitive performance in subjects with and without
self-reported sensitivity to RF EMF.
Methods
We performed a controlled exposure experiment (45 min at an electric field strength of 0, 1 or
10 V/m, incident with a polarization of 45o from the left back side of the subject, weekly
intervals) in a randomized, double-blind crossover design. 117 healthy subjects (33 self-
reported sensitive, 84 non-sensitive subjects) participated in the study. We assessed well
being, perceived field strength and cognitive performance with questionnaires and cognitive
tasks and conducted statistical analyses using linear mixed models. Organ and brain tissue
specific dosimetry including uncertainty and variation analysis was performed.
Results
In both groups, well being and perceived field strength were not associated with actual
exposure levels. We observed no consistent condition-induced changes in cognitive
performance except for two marginal effects. At 10 V/m, we observed a slight effect on speed
in one of six tasks in the sensitive subjects and an effect on accuracy in another task in non-sensitive subjects. Both effects disappeared after multiple endpoint adjustment.
Conclusions
In contrast to a recent Dutch study, we could not confirm a short-term effect of UMTS base
station-like exposure on well being. The reported effects on brain functioning were marginal
and may have occurred by chance. Peak spatial absorption in brain tissue was considerably
smaller than during usage of a mobile phone. No conclusions can be drawn regarding short
term-effects of cell phone exposure or the effects of long-term base station-like exposure on
human health.
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Hits: 1038
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Untersuchungen an Probanden unter Exposition mit hochfrequenten elektromagnetischen Feldern...
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07.07.2006
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Untersuchungen an Probanden unter Exposition mit hochfrequenten elektromagnetischen Feldern von Mobiltelefonen
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Hits: 1331
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UMTS Base Station-like Exposure, Well-Being, and Cognitive Performance
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21.04.2007
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BACKGROUND: Radio-frequency electromagnetic fields (RF EMF) of mobile communication systems are widespread in the living environment, yet their effects on humans are uncertain despite a growing body of literature.
OBJECTIVES: We investigated the influence of a Universal Mobile Telecommunications System (UMTS) base station-like signal on well-being and cognitive performance in subjects with and without self-reported sensitivity to RF EMF.
METHODS: We performed a controlled exposure experiment (45 min at an electric field strength of 0, 1, or 10 V/m, incident with a polarization of 45° from the left back side of the subject, weekly intervals) in a randomized, double-blind crossover design. A total of 117 healthy subjects (33 selfreported sensitive, 84 nonsensitive subjects) participated in the study. We assessed well-being, perceived field strength, and cognitive performance with questionnaires and cognitive tasks and conducted statistical analyses using linear mixed models. Organ-specific and brain tissue–specific dosimetry including uncertainty and variation analysis was performed.
RESULTS: In both groups, well-being and perceived field strength were not associated with actual exposure levels. We observed no consistent condition-induced changes in cognitive performance except for two marginal effects. At 10 V/m we observed a slight effect on speed in one of six tasks in the sensitive subjects and an effect on accuracy in another task in nonsensitive subjects. Both effects disappeared after multiple end point adjustment.
CONCLUSIONS: In contrast to a recent Dutch study, we could not confirm a short-term effect of UMTS base station-like exposure on well-being. The reported effects on brain functioning were marginal and may have occurred by chance. Peak spatial absorption in brain tissue was considerably smaller than during use of a mobile phone. No conclusions can be drawn regarding short-term effects of cell phone exposure or the effects of long-term base station-like exposure on human health.
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Hits: 1145
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The Physiological and Environmental Effects of Electromagnetic Radiation
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19.02.2006
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Publisher: European Parliament
Directorate General for Research
Directorate A
The STOA Programme
Author: Dr. Gerard Hyland
University of Warwick - U.K.
International Institute of Biophysics, Germany
Date: March 2001
Abstract
This Study focuses upon an aspect of how living organisms and humans in particular can be adversely affected by highly coherent electromagnetic fields of technological origin, in a way that is not entertained or addressed by existing Safety Guidelines – namely, through the possibility of nonthermal, frequency-specific influences of an informational nature. Supporting evidence is presented, and attention drawn to a disturbing consistency between some of these influences and the nature of certain adverse health effects found amongst some exposed people. On the basis of a detailed analysis of the present situation, a number of recommendations are made to promote a higher degree of electromagnetic biocompatibility between these fields and the living human organism than currently obtains.
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Hits: 955
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The Naila-Study
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19.02.2006
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The Influence of Being Physically Near to a Cell Phone Transmission Mast on the Incidence of Cancer
Horst Eger, Klaus Uwe Hagen, Birgitt Lucas, Peter Vogel, Helmut Voit
Published in Umwelt·Medizin·Gesellschaft 17,4 2004, as:
‘Einfluss der räumlichen Nähe von Mobilfunksendeanlagen auf die Krebsinzidenz’
Summary
Following the call by Wolfram König, President of the Bundesamt für Strahlenschutz (Federal Agency for radiation protection), to all doctors of medicine to collaborate actively in the assessment of the risk posed by cellular radiation, the aim of our study was to examine whether people living close to cellular transmitter antennas were exposed to a heightened risk of taking ill with malignant tumors.
The basis of the data used for the survey were PC files of the case histories of patients between the years 1994 and 2004. While adhering to data protection, the personal data of almost 1.000 patients were evaluated for this study, which was completed without any external financial support. It is intended to continue the project in the form of a register.
The result of the study shows that the proportion of newly developing cancer cases was significantly higher among those patients who had lived during the past ten years at a distance of up to 400 metres from the cellular transmitter site, which bas been in operation since 1993, compared to those patients living further away, and that the patients fell ill on average 8 years earlier.
In the years 1999-2004, i.e. after five years’ operation of the transmitting installation, the relative risk of getting cancer had trebled for the residents of the area in the proximity of the installation compared to the inhabitants of Naila outside the area.
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