Mentre
aspettiamo da due anni la definizione di un protocollo per l’indagine
epidemiologica eccoci a presentare l’ennesima metanalisi ( ma quante altre ne
servono ancora per incominciare a considerare il problema ?? ) che
racchiude ben 42 studi sui possibili effetti delle esposizioni
alle basse frequenze ( elettrodotti ) ed il rischio di sviluppare cancro.
I ricercatori hanno trovato una
correlazione statisticamente significativa ( alto rischio ) tra
esposizioni e sviluppo di cancro soprattutto in ambito residenziale quindi soggetti residenti in abitazioni collocate
nei pressi di elettrodotti ( ma chi l’avrebbe mai detto !!!!!! ).
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Environ Int. 2015 Dec 15;88:36-43. doi:
10.1016/j.envint.2015.12.012. [Epub ahead of print]
Meta-analysis of extremely low frequency
electromagnetic fields and cancer risk: a pooled analysis of epidemiologic
studies.
Author
1High Voltage Research Institute, China Electric Power Research Institute,
Wuhan, People's Republic of China.
2Department of Internal Medicine and the Institute of Hypertension, Tongji
Hospital, Tongji Medical College of Huazhong University of Science and
Technology, Wuhan, People's Republic of China.
3Department of Internal Medicine and the Institute of Hypertension, Tongji Hospital,
Tongji Medical College of Huazhong University of Science and Technology, Wuhan,
People's Republic of China. Electronic address: chenchen@tjh.tjmu.edu.cn.
Abstract
Studies have suggested that extremely low frequency
electromagnetic fields (ELF-EMF) may affect physiological functions in animal
models. However, epidemiologic studies investigating the association of ELF-EMF
with the susceptibility to cancer yield contradictory results. In this
comprehensive analysis, we conducted a search for case-control surveys
regarding the associations of ELF-EMF and cancer susceptibility in electronic
databases. A total of42 studies involving 13,259 cases and 100,882
controls were retrieved. Overall, increased susceptibility to cancer was
identified in the ELF-EMF exposed population (OR=1.08, 95% CI: 1.01,
1.15, P=0.02). In the stratified analyses, increased risk was found
in North America (OR=1.10; 95% CI: 1.02, 1.20, P=0.02), especially the
United States (OR=1.10; 95% CI: 1.01, 1.20, P=0.03). However, studies
from Europe contradict these results. Moreover, a higher risk was found
to be statistically significantly associated with the residential exposed
population (OR=1.18; 95% CI: 1.02, 1.37, P=0.03).
Furthermore, an increased cancer risk was found in interview-based surveys
(OR=1.16; 95% CI: 1.00, 1.35, P=0.04). In device measurement-based studies, a
slight increased risk was found only in premenopausal breast cancer (OR=1.23;
95% CI: 1.01, 1.49, P=0.04). Our meta-analysis suggests that
ELF-EMFs are associated with cancer risk, mainly in the United States and in
residential exposed populations. Methodological challenges might
explain the differences among studies.
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