Electric and magnetic fields (EMFs) are invisible
areas of energy, often referred to as radiation ,
that are associated with the use of electrical power and various forms of
natural and man-made lighting. EMFs are typically characterized by wavelength
or frequency into one of two radioactive categories:
The National Toxicology Program (NTP) headquartered at NIEHS is leading the largest laboratory rodent study to date on cell phone radio frequency. The NTP studies will help clarify any potential health hazards from exposure to cell phone radiation . The studies are designed to mimic human exposure and are based on the frequencies and modulations currently in use in the United States.
The NTP has worked closely with radiofrequency experts from the National Institute of Standards and Technology (NIST) to design highly specialized study facilities to specify and control sources of radiation and to measure their effects on rodents. The NTP studies are designed to look at effects in all parts of the body.
On May 27, 2016, NTP released a report, "Report of Partial Findings From the National Toxicology Program Carcinogenesis Studies of Cell Phone Radiofrequency Radiation in Hsd: Sprague Dawley SD Rats (Whole Body Exposure)," on some important study findings. NTP found low incidences of tumors in the brains and hearts of male rats, but not in female rats. Studies in mice are continuing. The complete results from all the rat and mice studies will be available for peer review and public comment by the end of 2017.
In addition to the NTP studies, the NIEHS funded researchers at the University of California, Los Angeles, to study whether exposure to cell phones in childhood can affect the nervous system.