Study Evidence Concludes Cancer Developed in Male Rats Exposed to High RF Levels
Friday, November 02, 2018 | Comments

The National Toxicology Program (NTP) concluded there is clear evidence that male rats exposed to high levels of radio frequency radiation (RFR) such as that used in 2G and 3G cellphones developed cancerous heart tumors, according to final reports released Nov. 1.

There was also some evidence of tumors in the brain and adrenal gland of exposed male rats. For female rats, and male and female mice, the evidence was equivocal as to whether cancers observed were associated with exposure to RFR.

The $30 million NTP studies took more than 10 years to complete and are the most comprehensive assessment, to date, of health effects in animals exposed to RFR with modulations used in 2G and 3G cellphones, a statement said.

“The exposures used in the studies cannot be compared directly to the exposure that humans experience when using a cellphone,” said John Bucher, Ph.D., NTP senior scientist. “In our studies, rats and mice received RFR across their whole bodies. By contrast, people are mostly exposed in specific local tissues close to where they hold the phone. In addition, the exposure levels and durations in our studies were greater than what people experience.”

The lowest exposure level used in the studies was equal to the maximum local tissue exposure allowed for cell phone users. This power level rarely occurs with typical cellphone use. The highest exposure level in the studies was four times higher than the maximum power level permitted.

“We believe that the link between RFR and tumors in male rats is real, and the external experts agreed,” said Bucher.

“A major strength of our studies is that we were able to control exactly how much radio frequency radiation the animals received — something that’s not possible when studying human cellphone use, which has often relied on questionnaires,” said Michael Wyde, Ph.D., lead toxicologist on the studies.

2G and 3G networks were standard when the studies were designed and are still used for phone calls and texting. These studies did not investigate the types of RFR used for Wi-Fi or 5G networks.

“5G is an emerging technology that hasn’t really been defined yet. From what we currently understand, it likely differs dramatically from what we studied,” said Wyde.

He also noted the unexpected finding of longer lifespans among the exposed male rats. “This may be explained by an observed decrease in chronic kidney problems that are often the cause of death in older rats,” Wyde said.

The final conclusions represent the consensus between NTP and a panel of external scientific experts who thoroughly reviewed the draft NTP technical reports at a public meeting in March.

The results are based on NTP’s four categories of evidence that a substance may cause cancer: clear evidence (highest), some evidence, equivocal evidence, no evidence (lowest).

More information is here.

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Comments
On 11/7/18, Robert Sherwood said:
One wonders at the study and whether assessment was made of the chaotic nature of radiated waves from an antenna out to one-quarter wave distance. Surely within that space all the right conditions exist for summing and subtracting wave-fronts in the additive moment. Might cause levels of radio energy that exceed the anticipated free-space radio wave energy after the wave pattern became coherent.

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