SSS 2011-01-31
时间：2018-12-24 作者：英语课 分类：Scientific American(一)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.
Can we be too clean? According to what's called the hygiene 1 hypothesis, yes. Without being challenged as kids, our immune systems don't flourish. Scientists think it could be part of the rise of allergies 2 and asthma 3.
Now a new study supports the hygiene hypothesis: infants in Uganda had a lower chance of developing the skin allergy 4 condition eczema if their moms had helminth worm infections while pregnant. The research is in the journal Pediatric Allergy and Immunology.
A 2005 study showed that kids of women treated for worm infections had more eczema. Twenty-five hundred pregnant women took part in this follow-up research. Some got one worm-killing drug. Others took a different drug. And a third group received a placebo 5. One drug nearly doubled the kids' risk of eczema. The other more than doubled the odds 6.
Helminth worm infections can give the mothers symptoms such as mild anemia 7 or stomach pain and vomiting 8. Although many people have no symptoms at all. The scientists say more research is needed before they would recommend not treating worm infections. But the work lends additional support to the idea that hygiene may be a balancing act rather than a goal.
Thanks for the minute. For Scientific American's 60-Second Science, I'm Cynthia Graber.
- Their course of study includes elementary hygiene and medical theory.他们的课程包括基础卫生学和医疗知识。
- He's going to give us a lecture on public hygiene.他要给我们作关于公共卫生方面的报告。
- Food allergies can result in an enormous variety of different symptoms. 食物过敏会引发很多不同的症状。 来自辞典例句
- Let us, however, examine one of the most common allergies; hayfever. 现在让我们来看看最常见的变态反应的一种--枯草热。 来自辞典例句
- I think he's having an asthma attack.我想他现在是哮喘病发作了。
- Its presence in allergic asthma is well known.它在过敏性气喘中的存在是大家很熟悉的。
- He developed an allergy to pollen.他对花粉过敏。
- The patient had an allergy to penicillin.该患者对青霉素过敏。
- 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。
- The odds are 5 to 1 that she will win.她获胜的机会是五比一。
- Do you know the odds of winning the lottery once?你知道赢得一次彩票的几率多大吗？