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Evidence that there is a link between cancer and radiation emitted by cell phones is now clearer according to the National Institutes of Health in the United States on Thursday.
"The National Toxicology Program concluded that it was clearly established that male rats exposed to high levels of radio frequency (RFR) used in 2G and 3G cell phones had developed tumors cancerous heart "said the agency in a statement. . The conclusion comes from a study evaluating the effect of radio frequency radiation used in cell phones.
" There were also signs of brain and adrenal gland tumors in exposed male rats ] For female rats and male and female mice, the evidence was equivocal as to whether the observed cancers were badociated with exposure to RFR. "
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The report is in agreement with a project published last February
What was surprising, however, is that Another federal health agency, the FDA, does not agree with this conclusion .
"After reviewing the study, we do not agree with the conclusion of his final report regarding" clear evidence "of carcinogenic activity in rodents exposed to the disease. radio frequency energy, "said Jeffrey Shuren, director of the FDA's Center for Devices and Radiation Health, in a statement released Thursday in response to the report.
However, both agencies, depend on the US Department of Health and Human Services, agree that the results of these studies in rats and mice should not be applied to the use mobile phone in the man.
"The Exposures Used The studies can not be directly compared to the exposure experienced by humans when they use a mobile phone," said John Bucher, senior scientist of the US program. national toxicology. "In our studies, rats and humans received radiofrequency throughout their body." In contrast, most people are exposed in local tissues close to the telephone . In addition, the levels of exposure and the duration of our studies were higher than those of people. "
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Final Report and National Program Consensus of toxicology are the conclusion of a research effort of $ 30 million over 10 years.
The research included two large animal studies – one in rats and one in mice – which badociate high levels of cell phone radiation with evidence of carcinogenic activity in the male rat, including an unusual type of tumor called schwannoma in their heart. According to the report,
In the same way, no significant study emerged from the study in mice.
"One of the things we found most interesting about We discovered that schwannomas malignant although they occurred in the heart and not in the head of these animals, were actually schwannomas "said Bucher in February when the project's publication report.
The FDA points out that mobile phones emit low levels of non-ionizing radiofrequency energy and that, therefore, is not considered powerful enough to cause permanent damage to biological tissue including to the DNA.
The National Institutes of Health also point out that 5G or Wi-Fi networks were not included in the studies.
" 5G is an emerging technology that has not yet been defined as such .. mind From what we understand now, it seems to differ completely from what we have studied" said Michael Wyde, chief toxicologist of studies.
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Confusion and controversy
Studies of National Toxicology Program involved about 3,000 rodents as reported in the February draft report.
Animals were exposed to radiofrequency radiation levels equal to or greater than the highest level currently authorized for mobile phone broadcasts. The researchers followed the health of the animals from the uterus to two years.
A 2-year-old rat could be comparable to a 70-year-old human Butcher said.
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Researchers divided rodents into two groups, based on lower or higher radiofrequency radiation levels, and exposed their entire body to radiation in the first time. increasing by 10 minutes at a time to reach a total of about nine hours at
"It is important to consider the magnitude of animal exposure in these studies compared to what it could normally be received with a cell phone, "said Bucher. " The lowest level of radio frequency energy we studied was similar to the highest current level allowed for cell emissions ."
Among male rats, the researchers found tumors after about 6 months. % of those in the group with the highest exposure said Bucher. This percentage "exceeded the average historical incidence (0.8%) and exceeded the highest rate observed in a single historical control group (2%) of completed peer-reviewed studies," the researchers wrote.
they also found that the most exposed male rats in the group appeared to live longer than other rats, but further research was needed to determine why and how this might affect results of studies.
"Such animal studies contribute to our discussion on this subject, but we must remember that the study was not designed to test the safety of cell phones at the same time. so we can not draw any cell phone conclusions when using them, "said Shuren.
"Based on our current badessment on this topic, all available scientific evidence is not supported, adverse effects on human health resulting from exposure at or below current exposure limits to Radio Frequency We believe that the existing safety limits for mobile phones are still acceptable for the protection of public health. "
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