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根据以下材料，回答题
Obesity(肥胖)intheWesternWorld
ObesityisrapidlybecominganewproblemoftheWesternworld,delegatesagreedatthe1lthEuropeanConferenceontheissueinViennaWednesdaytoSaturday.Accordingtostatementsbeforetheopeningoftheconference--of2,000specialistsfrommorethan50countries--1.2billionpeopleworldwideareoverweight,and250millionareobese.
ProfessorBernhardLudvikofViennaGeneralHospitalsaid,"obesityisachronicillness.InGermany,20percentofthepeoplearealreadyaffected,butinJapanonlyonepercent."Buthesaidthattherewashopeforsufferersthankstothenewscientificdiscoveriesandmedication.
ProfessorFriedrichHeterotypicofSalzburgsaid,"Wearelivinginthenewage(but)withthemetabolism(新陈代谢)ofastone-ageman.""IhavejustbeentotheUnitedStates.Itisreallyterrible.Apizzashopisspringinguponeverycorner.WehavebeenoverrunbyfastfoodandCoca-Cola-ization."
Manyoftheexpertsstressedthatobesitywasapotentialkiller.Heterotypicsaid,"Eightypercentofalldiabeticsareobese,alsofiftypercentofallpatientswithhighbloodpressureandfiftypercentwithadipose(脂肪的)tissuecomplaints.""Tenpercentmoreweightmeansthirteenpercentmoreriskofheartdisease.Reducingone'sweightbytenpercentleadstothirteenpercentlowerbloodpressure."
AnotherexpertHermannToplaksaidthatthestatehealthservicesshouldimprovetheirfinancingofpreventiveprograms."Thoughthehealthinsurancepaysforsurgery(suchasreducingthesizeofthestomach)whenthebody-massindexismorethan40.Thatisequivalenttoaweightof116kilogramsforaheightof1.70meters.Oneshouldstartearlier."
Ludviksaidthatpreventionshouldbegininschool."Childobesity(fatdeposits)correlates(与……有关)withthetimewhichchildrenspendinfrontofTVsets."
Theconsequenceswereonlyapparentlateron.Nomorethanfifteenpercentofobesepeoplelivedtotheaveragelifeexpectancyfortheirpopulationgroup.
WhichofthefollowingisTRUEaboutobesityinParagraph2? A．PeopleinJapanneedn'tworryaboutobesity.
B．Obesityisadiseasethatlastsforalongtime.
C．20%ofthepeopleintheworldareoverweight.
D．Obesityshouldbecuredwithnewmedication.
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