世界无烟日高中英语作文:吸烟有害健康
everyyearhundredsofthousandsofpeoplearoundtheworlddiefromdiseasescausedbysmoking.
oneintwolifetimesmokerswilldiefromtheirhabit.halfofthesedeathswilloccurinmiddleage.
tobaccosmokealsocontributestoanumberofcancers.
themixtureofnicotineandcarbonmonoxideineachcigaretteyousmoketemporarilyincreasesyourheartrateandbloodpressure,strainingyourheartandbloodvessels.
thiscancauseheartattacksandstroke.itslowsyourbloodflow,cuttingoffoxygentoyourfeetandhands.somesmokersenduphavingtheirlimbs
amputated.
tarcoatsyourlungslikesootinachimneyandcausescancer.a20-a-daysmokerbreathesinuptoafullcup(210g)oftarinayear.
changingtolow-tarcigarettesdoesnothelpbecausesmokersusuallytakedeeperpuffsandholdthesmokeinforlonger,draggingthetardeeperintotheirlungs.
carbonmonoxiderobsyourmuscles,brainandbodytissueofoxygen,makingyourwholebodyandespeciallyyourheartworkharder.overtime,yourairwaysswellupandletlessairintoyourlungs.
smokingcausesdiseaseandisaslowwaytodie.thestrainputonyourbodybysmokingoftencausesyearsofsuffering.emphysemaisanillnessthatslowlyrotsyourlungs.peoplewithemphysemaoftengetbronchitisagainandagain,andsufferlungandheartfailure.
lungcancerfromsmokingiscausedbythetarintobaccosmoke.menwhosmokearetentimesmorelikelytodiefromlungcancerthannon-smokers.
heartdiseaseandstrokesarealsomorecommonamongsmokersthannon-smokers.
smokingcausesfatdepositstonarrowandblockbloodvesselswhichleadstoheartattack.
smokingcausesaroundoneinfivedeathsfromheartdisease.
inyoungerpeople,threeoutoffourdeathsfromheartdiseaseareduetosmoking