【英语翻译Teenagershaveanewshapethesedays.Theyareabout20poundsheavierthantheywere60yearsago.Theyareaboutfourinchestaller,too.ThesefactscomefromJ.M.Tanner,aprofessorinEngland.J.M.Tannerhasbeenmeasuringpeoplefromall】

　　英语翻译

　　Teenagershaveanewshapethesedays.Theyareabout20poundsheavierthantheywere60yearsago.Theyareaboutfourinchestaller,too.ThesefactscomefromJ.M.Tanner,aprofessorinEngland.

　　J.M.Tannerhasbeenmeasuringpeoplefromallovertheworld.Hehasalsostudiedpeople'sgrowthrecordsofthepast100years.

　　"Kidstodayarebiggerthaneverbefore,"hesays."Today'snine-year-oldslooklikeeleven-year-oldsbackin1900."

　　AccordingtoTanner,adultsalsoaretallerthaneverbefore.Butthebiggestchangecanbeseeninyoungpeople.That'sbecauseboysusedtokeepongrowinguntiltheyreachedage26.Buttodaytheystopgrowingat18or19.Mostgirlsstopgrowingevenearlier.Sotoday'steenagersarebiggerthan26-year-oldswere60yearsago.

　　Whatiscausingthischange?ProfessorTannersaysit'sproperfood.Agooddietalonecannotmakeyougrowbeyondyournaturallimits.Yourfinalheightispartlycausedbytheheightofyourparentsandgrandparents.Buteatingproperfoodcanhelpyoureachyourfinalheight--andreachitearlyinlife.

　　Willpeoplekeepongettingbigger?Willwehavearaceofgiants?NO--atleastnotiftheU.S.isanexample.Tannersaysthatwehaveeatenproperfoodforyears,andourgrowthratehasalreadybeguntoleveloff.