[ 90 ]FDA has been a leading participant in the World Health Organization InternationalElectromagnetic Fields (EMF) Project since its inception in 1996. An influential result of thiswork has been the development of a detailed agenda of research needs that has driven theestablishment of new research programs around the world. The Project has also helped developa series of public information documents on EMF issues.FDA and the Cellular Telecommunications & Internet Association (CTIA) have a formalCooperative Research and Development Agreement (CRADA) to do research on wirelessphone safety. FDA provides the scientific oversight, obtaining input from experts ingovernment, industry, and academic organizations. CTIA-funded research is conductedthrough contracts to independent investigators. The initial research will include bothlaboratory studies and studies of wireless phone users. The CRADA will also include a broadassessment of additional research needs in the context of the latest research developmentsaround the world.7. How can I find out how much radiofrequency energy exposure I can get by usingmy wireless phone?All phones sold in the United States must comply with Federal Communications Commission(FCC) guidelines that limit radiofrequency energy (RF) exposures. FCC established theseguidelines in consultation with FDA and the other federal health and safety agencies. The FCClimit for RF exposure from wireless telephones is set at a Specific Absorption Rate (SAR) of 1.6watts per kilogram (1.6 W/kg). The FCC limit is consistent with the safety standards developedby the Institute of Electrical and Electronic Engineering (IEEE) and the National Council onRadiation Protection and Measurement. The exposure limit takes into consideration the body’sability to remove heat from the tissues that absorb energy from the wireless phone and is setwell below levels known to have effects.Manufacturers of wireless phones must report the RF exposure level for each model of phoneto the FCC. The FCC website (http://www.fcc.gov/oet/rfsafety) gives directions for locating theFCC identification number on your phone so you can find your phone’s RF exposure level inthe online listing.8. What has FDA done to measure the radiofrequency energy coming fromwireless phones?The Institute of Electrical and Electronic Engineers (IEEE) is developing a technical standardfor measuring the radiofrequency energy (RF) exposure from wireless phones and otherwireless handsets with the participation and leadership of FDA scientists and engineers. Thestandard, Recommended Practice for Determining the Spatial-Peak Specific Absorption Rate(SAR) in the Human Body Due to Wireless Communications Devices: ExperimentalTechniques, sets forth the first consistent test methodology for measuring the rate at which RFis deposited in the heads of wireless phone users. The test method uses a tissue-simulatingmodel of the human head. Standardized SAR test methodology is expected to greatly improvethe consistency of measurements made at different laboratories on the same phone. SAR is themeasurement of the amount of energy absorbed in tissue, either by the whole body or a smallpart of the body. It is measured in watts/kg (or milliwatts/g) of matter. This measurement isused to determine whether a wireless phone complies with safety guidelines.9. What steps can I take to reduce my exposure to radiofrequency energy from mywireless phone?If there is a risk from these products--and at this point we do not know that there is--it isprobably very small. But if you are concerned about avoiding even potential risks, you can takea few simple steps to minimize your exposure to radiofrequency energy (RF). Since time is a keyfactor in how much exposure a person receives, reducing the amount of time spent using awireless phone will reduce RF exposure.