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interval between the time of exposure to a cancer-causing
agent and the time tumors develop - if they do - may be
many, many years. The interpretation of epidemiological
studies is hampered by difficulties in measuring actual RF
exposure during day-to-day use of wireless phones. Many
factors affect this measurement, such as the angle at which
the phone is held, or which model of phone is used.
What is FDA doing to find out more about the
possible health effects of wireless phone RF?
FDA is working with the U.S. Toxicology Program and with
groups of investigators around the world to ensure that high
priority animal studies are conducted to address important
questions about the effects of exposure to radio frequency
energy (RF).
FDA has been a leading participant in the World Health
Organization International Electromagnetic Fields (EMF)
Project since its inception in 1996. An influential result of tis
work has been the development of a detailed agenda of
research needs that has driven the establishment of new
research programs around the world. The project has also
helped develop a series of public information documents on
EMF issues.
FDA and the Cellular Telecommunications & Internet
Association (CTIA) have a formal Cooperative Research and
Development Agreement (CRADA) to do research on
wireless phone safety. FDA provides the scientific oversight,
obtaining input from experts in government, industry, and
academic organizations. CTIA-funded research is conducted
through contracts to independent investigators. The initial
research will include both laboratory studies and studies of
wireless phone users. The CRADA will also include a broad