医学科普类英文文章.pdf

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医学科普类英文文章

1

DoHumanBeingsCarryExpirationDates?

Aftercelebratingher60thyearonthethroneinstylethispastweek,

BritainsQueenElizabethIIcannowlookforwardtobreakingsomemorerecords.

Sheisalready,at86,Britainsoldestmonarchwereshetodienow,herson

wouldimmediatelybethe12tholdest.OnSept.10,2021,shewouldpassQueen

Victoriatobecomethelongest-reigningmonarchinBritishhistory.Tobeat

LouisXIVwhosucceededtothethroneattheageof4forthelongestreignin

Europeanhistory,shewouldhavetoliveto98.

ElizabethIIisstillgoingstrong,butthemaximumhumanlifespanisnt

risingatanythingliketherateofaveragelifeexpectancy,whichisrushing

upwardgloballyattherateofaboutthreemonthsayear,mainlybecauseof

progressagainstprematuremortality.Indeed,wemayalreadyhavehitsomekind

oflimitformaximumlifespan--perhapsbecausenaturalselection,withits

strictfocusonreproductivesuccess,hasnoparticularneedtopreservegenes

thatwouldkeepusgoingto150.

Theoldestwomanintheworld,BesseCooper,aretiredschoolteacherin

Georgia,willbe116onAug.26,accordingtotheGerontologyResearchGroup,an

organizationthatstudiesagingissues.Thatsagreatage,butitsahefty

sixyearsshortoftherecord:122yearsand164days,setbyJeanneCalmentof

Francein1997.Inotherwords,ifMrs.Coopercangetthere,Mrs.

Calmentsrecordwillhavestoodfor21years;ifshecant,maybelonger.

Thatsalongtime,consideringthattherearenownearlyahalfmillion

centenariansaliveintheworld.Thatnumberhasbeengoingup7%ayear,but

thenumberofthoseover115isnotincreasing.

IfMrs.Cooperdoesnottaketherecord,thereareonlytwoother115-

year-oldsalivetotakeonthechallenge,andoneofthemisaman:Jiroemon

Kimura,aretiredpostmanfromKyoto.Heswithinsevenmonthsofbeatingthe

agerecordforhisse

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