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¡¡¡¡Jeanne Calment took up skating at age 85, made her first movie appearance at age114£®and held a concert in the neighborhood on her 121 st birthday£®
¡¡¡¡When it comes to long life, Jeanne Calment is the world¡¯s recordholder£®She lived to the ripe old age of 122£®So is 122 the upper limit(ÏÞÖÆ)to the human life span(ÊÙÃü)?If scientists come up with some sort of pill or diet that would slow aging, could we possibly make it to 150£or beyond?
¡¡¡¡Researchers don't entirely agree on the answers£®¡°Calment lived£®to 122, SO it wouldn't sul33rise me if someone alive today reaches 130 or 135,¡±says Jerry Shay at the University of Texas£®
¡¡¡¡Steve Austad at the University of Texas agrees£®¡°People can live longer than we think£®¡±he says£®¡°Experts used to say that humans couldn¡¯t live past 110£®When Calment blew past that age, they raised the number to 1 20£®So why can¡¯t we go higher?¡±
¡¡¡¡The trouble with guessing how old people can live to be is that it¡¯s all just guessing£®¡°Anyone can make up a number£®¡±says Rich Miller at the University, of guessing
¡¡¡¡¡¡Michigan£®¡°Usually the scientist who picks the highest number gets his name in Time magazine£®¡±
¡¡¡¡Won¡¯t new anti£aging techniques keep us alive for centuries?Any cure, says Miller, for aging would probably keep most of HS living until about 120£®Researchers are working on treatments that make the life span of mice longer by 50 percent at most£®
¡¡¡¡So, if the average(ƽ¾ù)human life span is about 80 years, says Miller,¡°adding another 50 percent would get you to 120£®¡±
¡¡¡¡So what can we learn from this little disagreement among the researchers?That life span is flexible(Óе¯ÐÔµÄ), but there is a limit, says George Martin of the University of Washington£®¡°We can get flies to live 50 percent longer£®¡±he says£®¡°But a fly'snever going to live 150 years£®¡±Of course, if you became a new species(ÎïÖÖ), one that ages at a slower speed, that would be a different story, he adds£®
¡¡¡¡Does Martin really believe that humans could evolve(½ø»¯)their way to longer life?¡°It¡¯s pretty cool to think about£®¡±He says with a smile£®
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