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Your Environment. Your Health.

Cell Phones


Mobile Phones

Cell Phones

Cell phones are currently used by 95% of American adults, according to a 2016 Survey. NIEHS and other scientific organizations are actively studying the potential health effects of radiofrequency radiation used in cellular communications.

What is NIEHS Doing?

The National Toxicology Program (NTP), headquartered at NIEHS, has conducted studies in rats and mice to help clarify potential cancer hazards from exposure to cell phone radiofrequency radiation. The studies are applicable to the frequencies and modulations used in the United States telecommunications system.

The draft Technical Reports for rats and mice were reviewed by an external expert panel in March 2018. NTP staff are currently reviewing the panel recommendations and finalizing conclusions. The final NTP Technical Reports are expected in fall 2018.

NTP Cell Phone Study

For more information about the NTP studies please visit the National Toxicology Program: Cell Phones page.

This follows NTP’s release of partial findings in May 2016 via the "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)". NTP reported low incidences of tumors in the brains and hearts of male rats, but not in female rats, in these partial findings.

Further Reading

Stories from the Environmental Factor (NIEHS Newsletter)

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