Itisoftenassumedthatpeoplewithparentswholivedtobeveryoldaremorelikelytolivetoagrandoldagethemselves．"Butthat'sjustnottrue-ourstudyshowsthathereditaryfactorsdon'tplayamajorroleandthatlifestylehasthebi

　　Itisoftenassumedthatpeoplewithparentswholivedtobeveryoldaremorelikelyto livetoagrandoldagethemselves．

　　"Butthat'sjustnottrue-ourstudyshowsthathereditaryfactorsdon'tplayamajorroleandthatlifestylehasthebiggestimpact．"says professorLarsWilhelmsen，referringtothe1913MenStudythatformedthebasisofthecurrentresearch．

　　Thosewhodidnotsmoke，consumedmildamountsofcoffeeandhadagoodsocio-economicstatusattheageof50（measured intermsofhousingcosts），aswellasgood？physicalworkingabilityattheageof54andlowcholesterol（胆固醇）at50hadthegreatestchanceofcelebratingtheir90thbirthday．

　　"We'rebreakingnewgroundhere．"saysWilhelmsen．"Manyofthesefactorshavepreviouslybeenidentifiedasplayingaroleincardiovascular（心血管的 ）disease，buthereweareshowingforthefirsttimethattheyareimportantforsurvivalingeneral，"

　　Hebelievesthatitissignificantthattheresearchillustratessoclearly thatitisthesumofourownhabitsthathasthebiggestimpact．

　　"Thestudyclearlyshowsthatwecaninfluenceseveralofthefactorsthatdecidehowoldweget，"saysWilhelmsen．"Thisispositivenotonlyfortheindividual，butalsoforsocietyas itdoesn'tneedanymajordrugcosts，"

　　ThestudyhasbeenpublishedintheJournalofInternalMedicine．

　　The1913Menstudystartedupin1963． Athirdofallmale50-year-oldinGothenburgwerecalledforacheck-upthatfocusedoncardiovascularhealth． Everytenyearssince，anewgroupof50-year-oldhasbeencalledinandthosewhowerealreadytakingpartinthestudyhavebeengivenanothercheck-up． Thishasenabledresearcherstofollowthedevelopmentofillnessesinaspecificagegroup，andtocomparethehealthof50-year-old in2003withthatof50-year-oldin1963，forexample． Womenhavealsobeenincludedinthestudysince2003． Datahavebeenstudiedovertheyears． includingBMI（体质指数），smokinghabits，cholesterol，exercisehabitsandbloodpressure，

　　Themenborninl913wereexaminedwhentheywere50，54，60，67，75and80． Ofthe855menwhotookpartinthestudyfromthestart，？111？（13%）werestillaliveattheageof90．

　　Overtheyearsthemat