A d d i t i o n a l s a f e t y i n f o r m a t i o n115■ Message from the FDAThe U.S. Food and Drug Administration (FDA) provides the following consumerinformation about wireless phones.See http://www.fda.gov/cellphones/ for updated information.Do wireless phones pose a health hazard?The available scientific evidence does not show that any health problems areassociated with using wireless phones. There is no proof, however, that wirelessphones are absolutely safe. Wireless phones emit low levels of radiofrequencyenergy (RF) in the microwave range while being used. They also emit very lowlevels of RF when in the stand-by mode. Whereas high levels of RF can producehealth effects (by heating tissue), exposure to low level RF that does not produceheating effects causes no known adverse health effects. Many studies of lowlevel RF exposures have not found any biological effects. Some studies havesuggested that some biological effects may occur, but such findings have notbeen confirmed by additional research. In some cases, other researchers have haddifficulty in reproducing those studies, or in determining the reasons forinconsistent results.What is FDA’s role concerning the safety of wireless phones?Under the law, FDA does not review the safety of radiation-emitting consumerproducts such as wireless phones before they can be sold, as it does with newdrugs or medical devices. However, the agency has authority to take action ifwireless phones are shown to emit radiofrequency energy (RF) at a level that ishazardous to the user. In such a case, FDA could require the manufacturers ofwireless phones to notify users of the health hazard and to repair, replace orrecall the phones so that the hazard no longer exists.Although the existing scientific data do not justify FDA regulatory actions, FDAhas urged the wireless phone industry to take a number of steps, including thefollowing:• Support needed research into possible biological effects of RF of the typeemitted by wireless phones;• Design wireless phones in a way that minimizes any RF exposure to the userthat is not necessary for device function; and• Cooperate in providing users of wireless phones with the best possibleinformation on possible effects of wireless phone use on human health.FDA belongs to an interagency working group of the federal agencies that haveresponsibility for different aspects of RF safety to ensure coordinated efforts atthe federal level. The following agencies belong to this working group:• National Institute for Occupational Safety and Health