LGH812 User Manual

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Safety Guidelines

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radiofrequencyenergy(RF)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predisposed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don’t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longterm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10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

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User Manual - Page 20