LGH950 User Manual

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125

For Your Safety

house,typicallyoperateatfarlowerpowerlevels,andthusproduceRFexposuresfarbelow

theFCCsafetylimits.

4. What are the results of the research done already?

Theresearchdonethusfarhasproducedconflictingresults,andmanystudieshavesuffered

fromflawsintheirresearchmethods.Animalexperimentsinvestigatingtheeffectsof

RadioFrequency(RF)energyexposurescharacteristicofwirelessphoneshaveyielded

conflictingresultsthatoftencannotberepeatedinotherlaboratories.Afewanimal

studies,however,havesuggestedthatlowlevelsofRFcouldacceleratethedevelopment

ofcancerinlaboratoryanimals.However,manyofthestudiesthatshowedincreased

tumordevelopmentusedanimalsthathadbeengeneticallyengineeredortreatedwith

cancer-causingchemicalssoastobepre-disposedtodevelopcancerintheabsenceof

RFexposure.OtherstudiesexposedtheanimalstoRFforupto22hoursperday.These

conditionsarenotsimilartotheconditionsunderwhichpeopleusewirelessphones,so

wedonotknowwithcertaintywhattheresultsofsuchstudiesmeanforhumanhealth.

ThreelargeepidemiologystudieshavebeenpublishedsinceDecember2000.Between

them,thestudiesinvestigatedanypossibleassociationbetweentheuseofwirelessphones

andprimarybraincancer,glioma,meningioma,oracousticneuroma,tumorsofthebrainor

salivarygland,leukemia,orothercancers.Noneofthestudiesdemonstratedtheexistence

ofanyharmfulhealtheffectsfromwirelessphoneRFexposures.However,noneofthe

studiescananswerquestionsaboutlong-termexposures,sincetheaverageperiodofphone

useinthesestudieswasaroundthreeyears.

5. What research is needed to decide whether RF exposure from wireless phones poses a

health risk?

Acombinationoflaboratorystudiesandepidemiologicalstudiesofpeopleactuallyusing

wirelessphoneswouldprovidesomeofthedatathatareneeded.Lifetimeanimalexposure

studiescouldbecompletedinafewyears.However,verylargenumbersofanimals

wouldbeneededtoprovidereliableproofofacancerpromotingeffectifoneexists.

Epidemiologicalstudiescanprovidedatathatisdirectlyapplicabletohumanpopulations,

buttenormoreyearsfollow-upmaybeneededtoprovideanswersaboutsomehealth

effects,suchascancer.Thisisbecausethe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

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User Manual - Page 125