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SSS 2011-06-14

时间:2011-07-06 01:42来源:互联网 提供网友:gmeng   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 Christopher Intagliata. Got a minute?

Apart from working and sleeping, the thing Americans do the most is watch TV—five hours a day on average. But all that time in front of the tube may up your risk of death, according to a review in the Journal of the American Medical Association.

Researchers analyzed1 eight previous studies looking at the effects of TV on health. Together, the studies followed more than 200,000 volunteers over about a decade of their lives, and controlled for other risk factors, like age and smoking. The take-home? For every two hours of TV per day, subjects had a 15 percent higher risk of heart disease and a 20 percent higher risk of developing type 2 diabetes2. That translates to a city of a million people having 1760 extra cases of diabetes compared to a city of a million who watch two hours less TV per day.

Previous studies have associated other sedentary activities, like sitting at a desk, with health risks. But the researchers say there's something unique about TV. Not only are we not exercising, but we tend to snack while watching. The prescription3, in this case, is simple, and side effects are rare: get off the couch4.

Thanks for the minute. For Scientific American's 60-Second Science, I'm Christopher Intagliata.


点击收听单词发音收听单词发音  

1 analyzed 483f1acae53789fbee273a644fdcda80     
v.分析( analyze的过去式和过去分词 );分解;解释;对…进行心理分析
参考例句:
  • The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
  • The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程,因为对他来说,爱是个不可分析的迷。 来自《简明英汉词典》
2 diabetes uPnzu     
n.糖尿病
参考例句:
  • In case of diabetes, physicians advise against the use of sugar.对于糖尿病患者,医生告诫他们不要吃糖。
  • Diabetes is caused by a fault in the insulin production of the body.糖尿病是由体內胰岛素分泌失调引起的。
3 prescription u1vzA     
n.处方,开药;指示,规定
参考例句:
  • The physician made a prescription against sea- sickness for him.医生给他开了个治晕船的药方。
  • The drug is available on prescription only.这种药只能凭处方购买。
4 couch mzfxf     
n.睡椅,长沙发椅;vt.表达,隐含
参考例句:
  • Lie down on the couch if you're feeling ill.如果你感觉不舒服就躺到沙发上去。
  • The rabbIt'sprang from its grassy couch.兔子从草丛中跳出。
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