CTIA–The Wireless Association® Statement on the Interphone Study

May 16, 2010

WASHINGTON, DC The following statement may be attributed to John Walls, vice president of public affairs for CTIA-The Wireless Association®:

“The Interphone project, coordinated by the International Agency for Research on Cancer, is the largest study of cell phone use and brain tumors ever undertaken and included substantial numbers of subjects using cell phones for ten years or longer.  Dr. Christopher Wild, Director of IARC, summarized the key finding of the study: ‘An increase of brain cancer is not established from the data from Interphone.’  Interphone’s conclusion of no overall increased risk of brain cancer is consistent with conclusions reached in an already large body of scientific research on this subject.  This includes extensive research in laboratories, which has not identified any known biologic mechanism by which cell phones can cause brain cancer or, as the Interphone report notes, ‘[H]as found no evidence that RF fields are carcinogenic in laboratory rodents or cause DNA damage in cells in culture.’

“In addition to the finding of no overall increased risk of brain cancer, the Interphone study authors stated that ‘There were suggestions of an increased risk of glioma at the highest exposure levels, but biases and errors prevent a causal connection.’ The authors noted, for example, that some study participants overstated their cell phone use, claiming to be on the phone for twelve or more hours a day.  The authors concluded that ‘The possible effects of long-term heavy use of mobile phones require further investigation.’

“As with any study, scientific organizations will review the Interphone study in the context of the significant body of research and published literature on the safety of cell phones.  CTIA and the wireless industry support continuing efforts of public health specialists and expert scientists in this area.  

“All cell phones sold in the U.S. must comply with the FCC’s radiofrequency exposure standards, which are designed to include a substantial margin of safety for consumers.  Numerous experts and government health and safety organizations around the world have reviewed the existing database of studies and ongoing research and concluded that RF products meeting established safety guidelines pose no known health risk.”


CTIA-The Wireless Association® (www.ctia.org) is an international organization representing the wireless communications industry. Membership in the association includes wireless carriers and their suppliers, as well as providers and manufacturers of wireless data services and products. CTIA advocates on behalf of its members at all levels of government. The association also coordinates the industry’s voluntary best practices and initiatives, and sponsors the industry’s leading wireless tradeshows. CTIA was founded in 1984 and is based in Washington, DC.