Mobile phones do appear to kill male rats

Mobile phones do appear to kill male rats

Mobile phones do appear to kill male rats

The National Toxicology Program, which released the results of its $30 million studies on Thursday, found that radio frequency radiation (RFR) similar to that used in 2G and 3G cell phones is associated with cancerous heart tumors in male rats.

The link between exposure and cancer was less clear in female rats and in male and female mice, according to the November 1 report from the National Toxicology Program (NTP) at the U.S. National Institute of Environmental Health Sciences (NIEHS). Changes from draft report in February include higher level of confidence for conclusion about tumours in male rat hearts, to "clear evidence" from "some evidence", Bucher said.

"Animal studies like this one contribute to our discussions on this topic, but we must remember the study was not created to test the safety of cellphone use in humans, so we can not draw conclusions about the risks of cellphone use from it", Dr. Jeffrey Shuren, director of the Food and Drug Administration's Center for Devices and Radiological Health, who was not involved with the study, said in a statement.

In studies, rodents received radiation across their whole bodies, and at higher exposures and greater duration than what people experience, he said.

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As such, the NTP is planning more studies that would take months instead of years in hopes of identifying the biomarkers of damage from RFR exposure.

Researchers found a link between mobile phone radiation and cancerous tumors in rats, adding to the ongoing inquiry into whether the devices pose a risk to users even as officials cautioned against extrapolating the results to humans. The tests for the study were done on rodents at levels much higher than humans are now exposed to. This power level rarely occurs with typical cell phone use. The studies did not investigate exposure to the radio frequency radiation used for Wi-Fi or 5G networks.

It is considered the most comprehensive assessment to date of the effects of RFR from modulations used in 2G and 3G cell phones.

Plus, FDA pointed out confusing findings from the rodent study - such as that the radiated rats lived longer than comparison rats that weren't exposed to the rays. "This may be explained by an observed decrease in chronic kidney problems that are often the cause of death in older rats", Wyde said. Those were specifically looked into because they were the standard when the study was designed and is still being used today by some, though less commonly so.

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Exposure to RFR began in the womb for rats and at five to six weeks old for mice, and continued for up to two years, or most of their natural lifetime. For two years, the animals were exposed to RFR for up to nine hours a day. The RFR levels in the studies ranged from 1.5-6 watts per kilogram in rats, and 2.5-10 watts per kilogram in mice.

"From what we now understand, it likely differs dramatically from what we studied".

But the Food and Drug Administration (FDA) insists that the danger does not apply to humans.

Scientists who reviewed the NTP study are calling for the Federal communications Commission to warn the public, but the FDA's response suggests the findings are over-hyped as it tries to quell consumer's fears. For more information on environmental health topics, visit http://www.niehs.nih.gov.

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"Based on our ongoing evaluation of this issue, the totality of the available scientific evidence continues to not support adverse health effects in humans caused by exposures at or under the current radiofrequency energy exposure limits", Shuren said.

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