★英语演讲稿范文★三分钟优秀演讲稿篇一smokingisagreatercauseofdeathanddisabilitythananysingledisease,saystheworldhealthorganisation.accordingtotheirfigures,itisresponsibleforapproximatelyfivemilliondeathsworldwideeveryyear.tobaccosmokingisaknownorprobablecauseofapproximately25diseases,andeventhewhosaysthatitsimpactonworldhealthisnotfullyassessed.heartattackandstrokeukstudiesshowthatsmokersintheir30sand40sarefivetimesmorelikelytohaveaheartattackthannon-smokers.tobaccocontributestothehardeningofthearteries,whichcanthenbecomeblockedandstarvetheheartofbloodflow,causingtheattack.often,smokerswhodevelopthiswillrequirecomplexandriskyheartbypasssurgery.ifyousmokeforalifetime,thereisa50%chancethatyoureventualdeathwillbesmoking-related-halfofallthesedeathswillbeinmiddleage.★英语演讲稿范文★smokingalsoincreasestheriskofhavingastroke.lungproblemsanotherprimaryhealthriskassociatedwithsmokingarelungcancer,whichkillsmorethan20,000peopleintheukeveryyear.usstudieshaveshownthatmenwhosmokeincreasetheirchancesofdyingfromthediseasebymorethan22times.womenwhosmokeincreasethisriskbynearly12times.lungcancerisadifficultcancertotreat-longtermsurvivalratesarepoor.smokingalsoincreasestheriskoforal,uterine,liver,kidney,bladder,stomach,andcervicalcancers,andleukaemia.anotherhealthproblemassociatedwithtobaccoisemphysema,which,whencombinedwithchronicbronchitis,produceschronicobstructivepulmonarydisease.
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