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Live longer live better

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发表于2024-11-24


Live longer live better 在线电子书 epub 下载 mobi 下载 pdf 下载 txt 下载 2024

Live longer live better 在线电子书 epub 下载 mobi 下载 pdf 下载 txt 下载 2024

Live longer live better 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024



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A LONG, HEALTHY LIFE<br >AN INCREASINGLY COMMON<br >PHENOMENON<br > mericans are living longer, healthier lives<br > than ever before--those age 65 and older are<br > now iO times the number they were in 1900.<br >People in their fifties and sixties today often have par-<br >ents, aunts, and uncles who are still fit and energetic.<br >NEW DEMOGRAPHICS IN THE UNITED STATES<br >The proportion of people in the<br >oldest and youngest age groups is<br >undergoing a shift. For every per-<br >son over 65, there are now only 2<br >under 18. Just 10 years ago the ra-<br >tio was i elderly person to 3<br >youngsters. Even the number of<br >Americans who live to be 100--<br >currently about 36,000--has dou<br >bled since 1980 (see TheNew<br >Centenarians--A Growing and<br >Lively Group, p. 13).<br > Families in which four and<br >even five generations live to<br >know one another are no longer<br >the rarity they once were.<br >AVERAGE LIFE EXPECTANCY THROUGH HISTORY<br >The changes in human life expectancy are depicted below. Although<br >there were increases throughout recorded history, the greatest strides<br >came in the early 20th centu~ andpromise to continue into the 2isl<br >3000 s.c.<br >AVERAGE LIFE<br >18 YEARS<br >The Great Sphinx at Giza<br >was carved out of stone<br >more than 2,600years<br >before Christ by men when<br >life expectancy was only<br >20 Fears.<br >LIFE SPAN VS. LIFE<br >EXPECTANCY<br >Gerontologists, scientists who<br >study aging, distinguish between<br >life span and life expectancy. Life<br >span refers to the biological limit<br >of human life. the absolutely old-<br >be extended (pp.26-28).<br > Life expectancy is a person s<br >average length of life based on<br >statistical probability. A baby<br >%.<br ><br >King Tutankhamen<br > of ERppt, shown<br > harpooning from<br > a riverboat, was<br > born in 13 70 ~.c<br > and lived only<br > 18 years.<br ><br >

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