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Symptoms related to GSM radiation from mobile phone base stations
Bron: bmjopen.bmj.com/content/3/12/e003836.full .
30 dec. 2013
Eerder geplaatst, maar met nieuwe toevoegingen.
BMJ Open 2013;3:e003836 doi:10.1136/bmjopen-2013-003836
Subjective symptoms related to GSM radiation from mobile phone base stations: a cross-sectional study
Claudio Gómez-Perretta1, Enrique A Navarro2, Jaume Segura3, Manuel Portolés1
1Research Center, University Hospital La Fe, Valencia, Spain
2Department of Applied Physics, Universitat de València, Valencia, Spain
3Department of Computer Sciences, ETSE-Universitat de València, Valencia, Spain
Professor Enrique A Navarro; email@example.com
Received 16 August 2013
Revised 16 November 2013
Accepted 20 November 2013
Published 30 December 2013
Objectives We performed a re-analysis of the data from Navarro et al (2003) in which health symptoms related to microwave exposure from mobile phone base stations (BSs) were explored, including data obtained in a retrospective inquiry about fear of exposure from BSs.
Design Cross-sectional study.
Setting La Ñora (Murcia), Spain.
Participants Participants with known illness in 2003 were subsequently disregarded: 88 participants instead of 101 (in 2003) were analysed. Since weather circumstances can influence exposure, we restricted data to measurements made under similar weather conditions.
Outcomes and methods A statistical method indifferent to the assumption of normality was employed: namely, binary logistic regression for modelling a binary response (eg, suffering fatigue (1) or not (0)), and so exposure was introduced as a predictor variable. This analysis was carried out on a regular basis and bootstrapping (95% percentile method) was used to provide more accurate CIs.
Results The symptoms most related to exposure were lack of appetite (OR=1.58, 95% CI 1.23 to 2.03); lack of concentration (OR=1.54, 95% CI 1.25 to 1.89); irritability (OR=1.51, 95% CI 1.23 to 1.85); and trouble sleeping (OR=1.49, 95% CI 1.20 to 1.84). Changes in –2 log likelihood showed similar results. Concerns about the BSs were strongly related with trouble sleeping (OR =3.12, 95% CI 1.10 to 8.86). The exposure variable remained statistically significant in the multivariate analysis. The bootstrapped values were similar to asymptotic CIs.
Conclusions This study confirms our preliminary results. We observed that the incidence of most of the symptoms was related to exposure levels—independently of the demographic variables and some possible risk factors. Concerns about adverse effects from exposure, despite being strongly related with sleep disturbances, do not influence the direct association between exposure and sleep.
Met commentaar van EMF refugees:
Americans' brains being fried by cell towers: New scientific evidence reveals shocking extent of electropollution damage
Exposure to cell phone towers alters brain function in alarming ways, causing a lack of concentration, irritability, difficulty sleeping and lack of appetite. That's the conclusion of a new study just published by the British Medical Journal.(1)
The study, authored by Professor Enrique A Navarro, concluded that the severity of such symptoms directly correlated to cell tower exposure levels. In other words, the closer a person lives to a cell tower, the greater the severity of their symptoms. This was true regardless of race, income level and other demographics.
Cell towers, of course, broadcast and receive electromagnetic switching signals. Human biology -- and the brain in particular -- relies on electro-biochemical pathways for healthy function. Many scientists have long suspected that chronic exposure to low levels of EMF pollution (electropollution) may interfere with healthy functioning of the brain and body. This latest research adds yet more support to that alarming idea.
It's not your imagination: Electromagnetic hypersensitivity is real
Electromagnetic hypersensitivity has long been dismissed as non-existent by some doctors and industry-funded scientists. After all, if EMF pollution from cell towers really does harm public health, then the implications are truly massive, both economically and in terms of human suffering.
But electromagnetic hypersensitivity is a genuine phenomenon. People are not ''inventing'' side effects or symptoms. As Navarro writes in the study:
The term electromagnetic hypersensitivity has been recently introduced in discussions attributing symptoms to exposure to EMFs. A review of this topic in 2010 found that 8 of the 10 studies evaluated through PubMed had reported increased prevalence of adverse neurobehavioral symptoms or cancer in populations living at distances < 500 m from cell phone towers.
Importantly, all these symptoms were recorded in people living near cell phone towers whose broadcast signal strength meets current safety guidelines. As the study author points out, this most likely means current government guidelines on cell phone towers are inadequate to protect the public. Revising such guidelines could have drastic implications for the nationwide telecommunications infrastructure.
By the way, people who live fewer than 500 meters from cell phone towers appear to be especially at risk of electromagnetic interference with brain function. Because electropollution strength is determined by the inverse square of the distance, a person who moves twice as close to a cell tower experiences four times the radiation.
26 maart 2014
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