AstudyledbyProfessorMarkWeiserofTelAvivUniversityandtheShebaMedicalCenteratTelHashomerHospitalhasdeterminedthatyoungmenwhosmokearelikelytohavelowerIQsthantheirnon-smokingpeers(同龄人).Tracking18-to21-year-oldmenenlistedintheIsraeliarmyinthelargesteverstudyofitskind,hehasbeenabletodemonstrateanimportantconnectionbetweenthenumberofcigarettesyoungmalessmokeandtheirIQ. TheaverageIQforanon-smokerwasabout101,whilethesmokers’averagewasmorethansevenIQpointslower,atabout94,thestudydetermined.TheIQsofyoungmenwhosmokedmorethanapackadaywerelowerstill,atabout90.AnIQscoreinahealthypopulationofsuchyoungmen,withnomentaldisorders(心理疾病),fallswithintherangeof84to116. Anaddictionthatdoesn’tdiscriminate(歧视) “Inthehealthprofession,we’vegenerallythoughtthatsmokersaremostlikelythekindofpeoplewhohavegrownupindifficultneighborhoods,orwho’vebeengivenlesseducationatgoodschools,”saysWeiser,whosestudywasreportedinarecentversionofthejournal,Addiction,“Butbecauseourstudyincludedsubjectswithvarioussocio-economicbackgrounds,we’vebeenabletoruleoutsocio-economicsasamajorfactor.Thegovernmentmightwanttorethinkhowitarrangesitseducationalresourcesonsmoking. Makingtheresultsmoresignificant,thestudyalsomeasuredeffectsintwinbrothers.Inthecasewhereonetwinsmoked,thenon-smokingtwinregisteredahigherIQonaverage. AlthoughalowerIQmaysuggestagreaterriskforsmokingaddiction,therepresentingdataonIQandsmokingfoundthatmostofthesmokersinvestigatedinthestudyhadIQswithintheaveragerange,nevertheless. Inthestudy,researcherstookdatafrommorethan20,000menbefore,duringandaftertheirtimeinthemilitary.Allmeninthestudywereconsideredingoodhealth,sincepre-screening(筛选的)measuresforsuitabilityinthearmyhadalreadybeentaken.Theresearchersfoundthataround28percentoftheirsamplessmokedoneormorecigarettesaday,3percentconsideredthemselvesex-smokers,and68percentsaidtheyneversmoked. “PeopleonthelowerendoftheaverageIQtendtodisplaypooreroveralldecision-makingskillswhenitcomestotheirhealth,”saysWeiser.He 代方远回答:
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