High exposure to radiofrequency radiation (RFR) resulted in tumors in the tissues surrounding the nerves in the hearts of male rats, but not in female rats or mice, according to the preliminary studies of the National Toxicology Program (NTP). The exposure levels used in these studies were equal to and above the highest level allowed for local tissue exposure in cell phone emissions today. Cellular phones typically emit RFR levels below the maximum allowed level.
The researchers built special chambers and exposed the rats and mice to different levels of RFR for two years. Exposure levels ranged from 1.5 to 6 watts per kilogram (W / kg) in rats and 2.5 to 10 W / kg in mice. The low power level for rats was equal to the highest level allowed for local tissue exposures from cell phone emissions today. Animals were exposed 10 minutes by 10 minutes, totaling just over 9 hours each day. The studies used 2G and 3G frequencies and modulations still used in voice calls and texting in the United States. “The newer 4G, 4G-LTE and 5G networks for streaming video and downloading attachments use different frequencies and cell phone signal modulations compared to the NTP used in these studies,” the researchers recall.
Radiation, a risk factor for heart tumors in rats
The results of the study showed that male rats developed a particular form of heart tumor when exposed to prolonged exposure to radiofrequency radiation higher than the norms allowed for human activities. Rats, male and female, also had a higher incidence of cardiomyopathy, heart muscle disease.
This research has also shown non-cancerous health effects in rats and mice, such as changes in body weight, tissue damage due to RFR-generated warming, and genetic damage.
“The levels and durations of exposure to radiofrequency radiation were much greater than what people experience even at maximum levels of cell phone use, and the entire body of the rodents tested was exposed,” explained the scientist who supervised the research, John Bucher. “Further studies are needed to confirm its results in humans.”
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