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The nocebo effect: Media reports may trigger symptoms of a disease
Date:5/6/2013

ine and sham fields," added Witthft. The so-called nocebo effect was initially identified during pharmaceutical trials. Subjects were observed to exhibit undesirable side effects even though they were not receiving the medication but merely a placebo.

Witthft undertook the current study in collaboration with G. James Rubin during a research stay at King's College in London. The 147 test subjects were first shown a television report. One group of participants watched a BBC One documentary, which dealt in no uncertain terms with the potential health hazards supposedly associated with cell phone and WiFi signals. The other group watched a report on the security of Internet and cell phone data. Then all the subjects in both groups were exposed to fake WiFi signals that they were told were real. Even though they were not exposed to any radiation, some of the subjects developed characteristic symptoms: 54 percent of the subjects reported experiencing agitation and anxiety, loss of concentration or tingling in their fingers, arms, legs, and feet. Two participants left the study prematurely because their symptoms were so severe that they no longer wanted to be exposed to the assumed radiation. It became apparent that the symptoms were most severe among the subjects who had high pre-existing anxiety as a result of viewing the documentary about the possible hazards of electromagnetic radiation.

The study thus demonstrates that sensationalized media reports on potential risks, which often lack scientific evidence, can have a significant effect on the health of large sections of the population. Such speculation on health hazards most likely has more than just a short-term impact like that of a self-fulfilling prophesy; it is likely that over the long term some people begin to believe that they are sensitive and develop symptoms in certain situations when exposed to electrosmog. "Science and the media need to work together more closely and make sure that repo
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Contact: Dr. Michael Witthft
witthoef@uni-mainz.de
49-613-139-39202
Johannes Gutenberg Universitaet Mainz
Source:Eurekalert

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