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# Shuren Reassures Public that Cell Phone Usage Still Safe
- URL: https://www.fdaweb.com/shuren-reassures-public-that-cell-phone-usage-still-safe/
- Published: 2018-02-02T12:00:00.000Z
- Updated: 2026-09-14T23:19:15.000Z
- Author: David McFarland
- Tags: Devices, #legacy-id-D5140674

CDRH director **Jeff Shuren** says that consumers should not be alarmed about findings from a new rodent study evaluating cell phone or radiofrequency energy exposure. In a 2/2 statement, Shuren said “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. Even with frequent daily use by the vast majority of adults, we have not seen an increase in events like brain tumors. Based on this current information, we believe the current safety limits for cell phones are acceptable for protecting the public health.”

Shuren was reacting to research conducted by the National Toxicology Program (NTP) that examined the effects of high exposure to radiofrequency energy in rodents. “As our colleagues at NTP note in a [statement](https://www.niehs.nih.gov/news/newsroom/releases/2018/february2/index.cfm?ref=fdaweb.com) issued earlier today, ‘the levels and duration of exposure to radiofrequency radiation were much greater than what people experience with even the highest level of cell phone use, and exposed the rodents' whole bodies,’” Shuren noted, adding that the findings should not be directly extrapolated to human cell phone usage.

However, Shuren said, the study conclusions “still require careful discussion, as our preliminary understanding of the NTP results is that the study found mostly equivocal, or ambiguous, evidence that whole body radiofrequency energy exposures given to rats or mice in the study actually caused cancer in these animals. There are additional unusual findings from the study, such as the exposed rats living longer than the control group rats, that we are assessing to understand how that may be relevant to the results. The FDA looks forward to participating in the peer review of this study in March, which is an important and crucial step in scientific research to assure the integrity and quality of the data and the conclusions that can be drawn from it. Public comment is welcome during this period and can be provided through the NTP’s [Federal Register notice](https://www.federalregister.gov/documents/2018/01/29/2018-01523/draft-ntp-technical-reports-on-cell-phone-radiofrequency-radiation-availability-of-documents-request?ref=fdaweb.com).”