The research found that male rats exposed to radio-frequency radiation had a greater chance of developing malignant brain cancer, tumors in the heart and tumors in other organs.
There was another finding that also doesn't translate: rats exposed to phone-like radiation live on average longer than rats that live "cell phone free". Results were posted online.
The long-awaited results of a $25 million National Institutes of Health study on the effects of cellphone radio frequency radiation exposure on animals is out, and the results are mixed. The toxicology program is headquartered at the National Institute of Environmental Health Sciences. Therefore, the results may not be applied directly to humans, according to John Bucher, a senior scientist at the National Toxicology Program.
The schwannoma example was the most compelling evidence in the studies that the radiation might be a carcinogen, Bucher said.
"We know that this clearly has been linked to MVA's [motor vehicle accidents] and accidents and we know that that's a significant source of morbidity", UH Cleveland Medical Center Dr. Andrew Sloan said. Starting in 2015, the city of Berkeley, California ordered mobile phone stores to put up signs advising customers that keeping their phones too close to their body might expose to higher-than-recommended levels of RF - an ordinance that has sustained legal challenges from the industry.
Dr Jeffrey Shuren, head of the FDA's radiological health division, said there is not enough evidence to say cellphone use poses health risks to people.
Researchers also observed mice in radiation chambers seemed to have a higher risk of DNA damage or heart problems.
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Since June, the president and the White House have been denying any such action was being considered. And this order followed Trump considering the firing of Deputy Attorney General Rod Rosenstein.
CTIA, the trade association for wireless carriers including AT&T Inc. and Verizon Communications Inc., said it follows expert guidance on health effects.
Two long-awaited studies of how cellphone radiation affects the health of mice and rats, released yesterday, are giving scientists plenty to think about-but the findings won't resolve the decades-old uncertainty surrounding the issue.
That means that muscular tissues are especially affected by cell phone radiation, which my explain why the nerve tumors were most likely to form in a highly muscular organ.
In male rats, there was a link between heart tumors and high exposure to cellphone radiation.
Separately, the Federal Communications Commission in 2013 asked for comments on whether USA standards need to be updated to protect people from mobile-phone radiation, and it hasn't acted.
Although they did not test 4G or 5G signals (used for streaming video and downloading attachments on many networks) the team said that they were testing exaggerated levels of 2G and 3G radiation, well above the approved levels for mobile phones.
"Even with frequent daily use by the vast majority of adults, we have not seen an increase in events like brain tumours", he said in a statement. "In the meantime, I want to underscore that based on our ongoing evaluation of this issue and taking into account all available scientific evidence we have received, we have not found sufficient evidence that there are adverse health effects in humans caused by exposures at or under the current radiofrequency energy exposure limits".