补铁剂并不能使孕妇显著受益-凯发k8官网

补铁剂并不能使孕妇显著受益
文章来源:未知 文章作者:enread 发布时间:2011-03-14 03:30 字体: [ ] 
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although universal prenatal supplementation with iron is recommended, an extra 1 of iron does not noticeably benefit pregnant women, except when they are anemic(贫血的) . this was observed by researchers of the institute of tropical medicine antwerp and colleagues who followed more than a thousand pregnant women in burkina faso. our body needs iron to produce hemoglobin(血红蛋白) , the substance in our red blood cells responsible for the transport of oxygen through our body. in western countries 2 – a shortage of oxygen transporters – is rare, but in africa up to half of all women are anemic. of the 1268 pregnant women in this study, 43% was anemic.

half of those women received daily pills with 60 milligrams of iron (plus folic acid); the other half received 30 mg of iron (plus folic acid, 3, vitamins a and c and other micronutrients). chance 4 who got what. the women took the pills until 3 months after delivery. at the end of the study, all women ended up with about the same levels of iron in their blood, regardless of how much iron they had taken. they all had around 11 grams of hemoglobin per deciliter of blood, say slightly below normal.

during 5, when also the growing child needs oxygen, women need more iron than normally, certainly towards the end of their pregnancy. but the administration of extra iron to the 'normal' women could not prevent their hemoglobin levels from (slightly) dropping. "the benefit of iron supplements in nonanemic women is unclear", the authors conclude in the american journal of clinical nutrition.

in africa, where many people are malnourished, and where 6(寄生虫) also take their part, many women suffer from iron-poor blood. that of course has to be supplemented. in anemic women the pills made the iron levels go up, to the same level as in the other pregnant women: a bit below normal.



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1 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。
2 jogy3     
n.贫血,贫血症
参考例句:
  • the doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。
  • i was put on iron tablets for my anemia.我曾因贫血吃补铁药片。
3 dfxwx     
n.锌;vt.在...上镀锌
参考例句:
  • brass is formed by the fusion of copper and zinc.黄铜是通过铜和锌的熔合而成的。
  • zinc is used to protect other metals from corrosion.锌被用来保护其他金属不受腐蚀。
4 lvqzzd     
adj.决定了的,坚决的;明显的,明确的
参考例句:
  • this gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
  • there is a decided difference between british and chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。
5 lpwxp     
n.怀孕,怀孕期
参考例句:
  • early pregnancy is often accompanied by nausea.怀孕早期常有恶心的现象。
  • smoking during pregnancy increases the risk of miscarriage.怀孕期吸烟会增加流产的危险。
6 a8076647ef34cfbbf9d3cb418df78a08     
寄生物( parasite的名词复数 ); 靠他人为生的人; 诸虫
参考例句:
  • these symptoms may be referable to virus infection rather than parasites. 这些症状也许是由病毒感染引起的,而与寄生虫无关。
  • kangaroos harbor a vast range of parasites. 袋鼠身上有各种各样的寄生虫。
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