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SSS 2010-11-04

时间:2010-12-07 06:06来源:互联网 提供网友:lp6135   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 Cynthia Graber. This will just take a minute.
It's been touted1 for its healthful, anti-inflammatory properties. It's been recommended for helping2 ease the pain of arthritis3, preventing cancer and slowing memory loss. But some recent studies of fish oil show that it may not always act as advertised—and that you can sometimes have too much of a good thing.
First, the latest news. Researchers spent 18 months following almost 300 patients with mild to moderate Alzheimer's. Some took fish oil, others a placebo4. And there was no difference cognitively5 between the two groups. The study is in the current Journal of the American Medical Association.
It's a mixed bag on cancer. A study of more than 35,000 post-menopausal women found that those who took fish oil seemed half as likely to develop breast cancer as those who didn't. That work was in the July issue of Cancer Epidemiology, Biomarkers & Prevention.
But a study in the October 15th issue of Cancer Research found that mice with inflamed6 bowels7 developed colitis and aggressive colon8 cancer when they were given high doses of fish oil.
So, fish oil might in fact have a healthful role in some circumstances. But you don't want to swallow every fish story.
Thanks for the minute. For Scientific American's 60-Second Science, I'm Cynthia Graber.


点击收听单词发音收听单词发音  

1 touted 00151f908b31d984fd20d8b48dba34f3     
v.兜售( tout的过去式和过去分词 );招揽;侦查;探听赛马情报
参考例句:
  • She's being touted as the next leader of the party. 她被吹捧为该党的下一任领导人。
  • People said that he touted for his mother and sister. 据说,他给母亲和姐姐拉生意。 来自辞典例句
2 helping 2rGzDc     
n.食物的一份&adj.帮助人的,辅助的
参考例句:
  • The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
  • By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。
3 arthritis XeyyE     
n.关节炎
参考例句:
  • Rheumatoid arthritis has also been linked with the virus.风湿性关节炎也与这种病毒有关。
  • He spent three months in the hospital with acute rheumatic arthritis.他患急性风湿性关节炎,在医院住了三个月。
4 placebo placebo     
n.安慰剂;宽慰话
参考例句:
  • The placebo has been found to work with a lot of different cases.人们已发现安慰剂能在很多不同的病例中发挥作用。
  • The placebo effect refers to all the observable behaviors caused by placebo.安慰剂效应是指由安慰剂所引起的可观察的行为。
5 cognitively d28af4705de1f9218cb8ba1d5bdf8372     
参考例句:
  • Cognitively,man,the subject of cognition,must classify and categorize the objects. 从认知学角度来看 ,作为认知主体的人对于认知对象必须进行分类和范畴化。 来自互联网
  • Cognitively, reference can be studied along with information processing of human mind. 从认知的角度看,要研究人类思维的信息处理过程。 来自互联网
6 inflamed KqEz2a     
adj.发炎的,红肿的v.(使)变红,发怒,过热( inflame的过去式和过去分词 )
参考例句:
  • His comments have inflamed teachers all over the country. 他的评论激怒了全国教师。
  • Her joints are severely inflamed. 她的关节严重发炎。 来自《简明英汉词典》
7 bowels qxMzez     
n.肠,内脏,内部;肠( bowel的名词复数 );内部,最深处
参考例句:
  • Salts is a medicine that causes movements of the bowels. 泻盐是一种促使肠子运动的药物。 来自《简明英汉词典》
  • The cabins are in the bowels of the ship. 舱房设在船腹内。 来自《简明英汉词典》
8 colon jqfzJ     
n.冒号,结肠,直肠
参考例句:
  • Here,too,the colon must be followed by a dash.这里也是一样,应当在冒号后加破折号。
  • The colon is the locus of a large concentration of bacteria.结肠是大浓度的细菌所在地。
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