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| Nov 25, 2009 8:56 pm |
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re: re: New Evidence on Dangers of Cell Phones |
Ron Sam
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excerpt from a pdf paper on Cell Phone radiation:
Doctor Igor Belyaev (Institute of General Physics, Russian Academy of Science) studied
effects of microwave exposure on DNA repair foci in human stem cells. In his opinion, recent data
indicate that microwaves (MW) from mobile phones inhibit DNA repair foci in human primary cells
of different types: lymphocytes, fibroblasts and mesenchymal stem cells (MSC) derived from adult
human adipose tissue while the strongest effects were observed in MSC cells. Importantly, the same
GSM carrier frequency (915 MHz) and UMTS frequency band (1947.4 MHz, middle channel) was
effective for all cell types, while another GSM signal (905 MHz) did not affect cells. Recent data
suggest that different cancer types including leukemia have a fundamentally common basis that is
grounded on epigenetic changes in stem cells. Therefore, our experimental findings regarding effects
of microwaves on stem cells may be important for cancer risk assessment. Interestingly enough,
exposure to extremely low frequency (ELF) electromagnetic fields results in similar biological effects
as exposures to microwaves. In our studies, both ELF and MW exposures inhibited formation of
DNA repair foci in human lymphocytes. ELF exposure has been reported in many epidemiological
studies to be associated with the increased children leukemia. On the other hand, no association of
ELF exposure with leukemia in adults was found. This discrepancy has not yet been clarified at the
mechanistic basis while ELF was classified as a possible carcinogen based on these studies. It is
known, that stem cells are more active in children as compared to adults. This activity may clarify the
differences between results obtained in ELF-leukemia studies with children and adults. Respectively,
elevated cancer risk may be expected in children from microwave exposure.
http://www.who.int/peh-emf/project/mapnatreps/Russia_2007_EMF_activity_report.pdf
Search in Google for this exact text:
cell phone danger site:who.intPrivate Reply to Ron Sam (new win) |
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