资料：WhyisSaltBadforYou? FRANKLECLAIR,a58-year-oldprovincialgovernmentemployeelivinginWinnipeg,hadnoideathathisbloodpressurewastoohigh.Whileoutoftownlastwinter,hecamedownwithacoldandasorethroatanddecidedtoseealocaldoctor. Apartfromcheckinghiscoldsymptoms,thedoctoralsogavehimageneralhealth-check.ThedoctorfoundthatFrank’sbloodpressurewashigherthannormalandadvisedhimtoseehisregularphysicianassoonashegothome. LeClair’sphysicianreferredhimtotheWinnipegHealthSciencesCentre,wheredietitianstoldhimthathemightbeabletocontrolhisbloodpressurebychanginghislifestyleratherthanbytakingdrugs.Peoplewithhighbloodpressurehavetocontroloreliminatefourelements:smoking,drinking,foodquantitiesandsalt.LeClairdoesn’tsmokeordrink,butthereweresomechangeshecouldmakeintheothertwocategories. Themostconclusiveevidencesofarthatahigh-saltdietisbadforyouisthe“Intersalt”study,involving10,000peoplein32countries.Itmeasuredtherelationshipbetweenurinarysodiumexcretion--adirectmeasureofsaltconsumption--andbloodpressure.Thestudyfoundthatpopulationswiththelowestsodiumexcretionalsohavethelowestbloodpressures. Recentstudieshaveshownthat“saltsensitivity”isamajorfactorintherelationshipbetweenahigh-saltdietandhypertension.Andhypertensionisariskfactorfortwoofthebiggestkillersinthiscountry:coronaryheartdiseaseandstroke.FrankLeClair’shighbloodpressurewasdiscoveredbychance.Therearenowarningsymptoms--highbloodpressureisknownasthesilentkiller. Ahigh-saltintaketriggersaviciouscycle.Thosewhoareusedtoalotofsaltintheirfoodfindtheyneedincreasingamountstobeabletocontinuetotasteitsflavour---themoresalttheyeat,themoretheywant.Itisalsoanaggravatingfactorinosteoporosisandiscloselylinkedtostomachcancer.Ahighsaltintakecanbedangerousforpeoplewithconditionsthatareaggravatedbyfluidretention,suchashepatitis,liverorkidneyproblems. Toreducehishighbloodpressure,FrankLeClairshould______.
A.give up cigarettes and alcohol B.reduce his food intake and salt consumption C.give up alcohol and reduce his salt consumption D.give up cigarettes and reduce his food intake正确答案B
