Evidence that there is a link between cancer and radiation from cell phones is now clearer, said National Institute of Health, said Thursday in the United States.
"The National Toxicology Program concluded that there is a clear evidence that male rats are exposed to a high level of RFR (RFR) as used in 2G and 3G cell phones have developed cancerous heart tumors"The agency's conclusion came from the research that assesses the effect of radiofrequency radiation, used in mobile phones.
"There were also several evidence of brain tumors and adrenal glands in exposed male rats, For rat and male females and female mice, the evidence was unambiguous as to whether the observed cancers were related to exposure to RFR. "
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The report agrees with the draft published in February this year.
What was surprising was that the other federal health agency, the FDA, does not agree with that conclusion.
"After reviewing the study, we do not agree with the conclusion of its final report on" clear evidence "of carcinogenicity in rodents exposed to radiofrequency energy," said Jeffrey Shuren, director of the Center for Devices and Radiological Health of the FDA, in response to the report this Thursday.
However, two agencies, which depend on the US Department of Health and Human Services, it is agreed that the results of these studies in rats and mice should not be applied to the use of cell phones in humans.
"Exposures used in research can not be directly compared with the exposure people are experiencing when using a cell phone," said John Bucher, a senior scientist with the US National Toxicology Program. "In our research, rats and people received radio frequency in all their bodies. By contrast, most people are exposed to local tissue near the place where the phone is heldIn addition, the exposure levels and duration of our studies were greater than what people are experiencing. "
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Final report and consensus of the National Toxicology Program they are the conclusion of a 10-year research worth $ 30 million.
The study included two large animal studies – one in rats and the other with mice – that linked high levels of cellular radiation with some evidence of carcinogenic activity in male rats, including an unusual type of tumor called schwannoma in their hearts. There were no significant findings in female rats.
Similarly, no significant findings were found in mice research, according to the report.
"One of the things we found most interesting about our findings was that malicious schwannomas, although they occurred in the heart, not in the head of these animals, they were actually schwannomi"Bucher said in February when they released the draft report.
The FDA emphasizes that mobile phones emit a low level of radio frequency energy that is unnamed and hence is not considered strong enough to cause permanent damage to the biological tissue, including DNA.
National Health Institutes also emphasize that 5G networks or wifi were not included in the studies.
"5G is a developing technology that is not yet defined. From what we understand right now, it seems to be completely different from what we've been studying, "said Michael Wyde, the head of toxicologist for studies.
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Confusion and controversy
Studies of the National Toxicology Program about 3,000 rodents are involved, as detailed in the draft report in February.
Animals were exposed to radio frequency levels of radiation equal to or above the highest degree currently permitted for cell phone emissions. Researchers monitored the health of the cervix from two to three years.
Two-year-old rats can in some ways be comparable to 70-year-old mensaid Butcher.
The researchers divided rodents into two groups, based on lower or higher levels of radiofrequency radiation, exposing all their bodies to radiation by increasing them for 10 minutes at the same time to reach a total of around nine hours per day over a period of time. two years
"It is important to consider the size of animal exposure in these studies compared to what can typically be received by cell phones," Bucher said. "The lowest level of radio frequency energy we have been studying was similar to the highest instantaneous level allowed for greenhouse gas emissions".
Of male rats, researchers found tumors in about 6% of those in the group with the highest exposureBucher said. This percentage "exceeded the average historical incidence (0.8%) and exceeded the highest rate in a historic control group (2%) of completed studies studied by peers," the researchers wrote.
Researchers have also discovered that male rats appeared to be living longer than other rats in the group with the highest exposure, but more research is needed to determine why and how this may be relevant to the results of the study.
"Animal studies like this contribute to our discussion of this subject, but we have to remember that The study is not designed to test cell phone safety in humans, so we can not draw conclusions about the risks of cell phones when we use them, "said Shuren.
"Based on our ongoing assessment of this subject, all available scientific evidence does not yet support the adverse effects on human health caused by exposure below or within the existing limits of energy exposure. We believe that existing security restrictions for mobile phones are still acceptable for the protection of human health. "