Health and Safety Information 138Consumer Information on Wireless PhonesThe U.S. Food and Drug Administration (FDA) has published aseries of Questions and Answers for consumers relating to radiofrequency (RF) exposure from wireless phones. The FDApublication includes the following information:What kinds of phones are the subject of this update?The term wireless phone refers here to hand-held wirelessphones with built-in antennas, often called "cell," "mobile," or"PCS" phones. These types of wireless phones can expose theuser to measurable radio frequency energy (RF) because of theshort distance between the phone and the user's head. These RFexposures are limited by Federal Communications Commissionsafety guidelines that were developed with the advice of FDA andother federal health and safety agencies.When the phone is located at greater distances from the user, theexposure to RF is drastically lower because a person's RFexposure decreases rapidly with increasing distance from thesource. The so-called "cordless phones," which have a base unitconnected to the telephone wiring in a house, typically operate atfar lower power levels, and thus produce RF exposures wellwithin the FCC's compliance limits.Do wireless phones pose a health hazard?The available scientific evidence does not show that any healthproblems are associated with using wireless phones. There is noproof, however, that wireless phones are absolutely safe.Wireless phones emit low levels of radio frequency energy (RF) inthe microwave range while being used. They also emit very lowlevels of RF when in the stand-by mode. Whereas high levels ofRF can produce health effects (by heating tissue), exposure tolow level RF that does not produce heating effects causes noknown adverse health effects. Many studies of low level RFexposures have not found any biological effects. Some studieshave suggested that some biological effects may occur, but suchfindings have not been confirmed by additional research. In somecases, other researchers have had difficulty in reproducing thosestudies, or in determining the reasons for inconsistent results.What is FDA's role concerning the safety of wirelessphones?Under the law, FDA does not review the safety of radiation-emitting consumer products such as wireless phones before theycan be sold, as it does with new drugs or medical devices.However, the agency has authority to take action if wirelessphones are shown to emit radio frequency energy (RF) at a levelthat is hazardous to the user. In such a case, FDA could requirethe manufacturers of wireless phones to notify users of theu810.book Page 138 Thursday, October 16, 2008 12:36 PM