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SSS 2008-12-26

时间:2010-05-15 08:02来源:互联网 提供网友:木渐浅。   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. 

Sometimes it’s not what you eat, but when you eat it. At least when it comes to longevity1 diets. For some time, scientists have known that animals kept on a strict diet live longer than their well-fed peers. But this Methuselah meal plan is no ordinary just-say-no-to-that-second-slice of pie kind of diet. To reap the life-extending benefits, some of these animals cut their calorie consumption in half. Such a diet might be do-able for captive mice and monkeys, but it would be a tough sell for people.

Then, five years ago, studies in mice suggested that intermittent2 fasting would work just as well. These mice abstained3 from eating every other day, and lived longer then their gluttonous4 comrades—without really skimping5 on the total calories they consumed.

Now, scientists at Kyoto University have found the same thing in worms that fasted every third day. And they found a gene6 that regulates the effect, results reported in the journal Nature. Like the mice, these fasting worms did not cut their total calorie intake7. But they boosted their lifespan by 50 percent, and showed fewer signs of physical decline than their peers. So go ahead, enjoy that extra slice of pie. Because tomorrow’s another day. To not eat.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.

 


点击收听单词发音收听单词发音  

1 longevity C06xQ     
n.长命;长寿
参考例句:
  • Good habits promote longevity.良好的习惯能增长寿命。
  • Human longevity runs in families.人类的长寿具有家族遗传性。
2 intermittent ebCzV     
adj.间歇的,断断续续的
参考例句:
  • Did you hear the intermittent sound outside?你听见外面时断时续的声音了吗?
  • In the daytime intermittent rains freshened all the earth.白天里,时断时续地下着雨,使整个大地都生气勃勃了。
3 abstained d7e1885f31dd3d021db4219aad4071f1     
v.戒(尤指酒),戒除( abstain的过去式和过去分词 );弃权(不投票)
参考例句:
  • Ten people voted in favour, five against and two abstained. 十人投票赞成,五人反对,两人弃权。
  • They collectively abstained (from voting) in the elections for local councilors. 他们在地方议会议员选举中集体弃权。 来自《简明英汉词典》
4 gluttonous Leazj     
adj.贪吃的,贪婪的
参考例句:
  • He is a gluttonous and lazy guy.他是个好吃懒做之徒。
  • He is a selfish, gluttonous and lazy person.他是一个自私、贪婪又懒惰的人。
5 skimping fccd3133497951483815276d5660488f     
v.少用( skimp的现在分词 );少给;克扣;节省
参考例句:
  • Nearly a third of workers are skimping on work to meet personal commitments. 几乎有三分之一的员工仅仅是为了达到自己许下的承诺因而在工作上马虎了事。 来自互联网
6 gene WgKxx     
n.遗传因子,基因
参考例句:
  • A single gene may have many effects.单一基因可能具有很多种效应。
  • The targeting of gene therapy has been paid close attention.其中基因治疗的靶向性是值得密切关注的问题之一。
7 intake 44cyQ     
n.吸入,纳入;进气口,入口
参考例句:
  • Reduce your salt intake.减少盐的摄入量。
  • There was a horrified intake of breath from every child.所有的孩子都害怕地倒抽了一口凉气。
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TAG标签:   SSS  consumption
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