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叶酸(维生素B9)能减少痴呆的风险吗

时间:2017-01-17 04:00来源:互联网 提供网友:mapleleaf   字体: [ ]
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   Vitamin B9 is also known as folic acid or folate. Technically1, folate is the term for the vitamin B9 that is found naturally in foods, while folic acid is the name for the synthetic2 supplement that is added to foods and vitamins.

  维生素B9也称为叶酸片或叶酸。从学术上讲叶酸存在于天然的食物中,是维生素B9的术语,而叶酸片是人工合成物,添加到食品中补充维生素。
  Adequate amounts of folic acid have commonly been recommended to prevent birth defects such as spina bifida. But, did you know that getting enough folate has also been associated with a reduced risk of developing dementia?
  充足的叶酸可以预防出生缺陷,已经被推荐使用在如脊柱裂预防上。但是,你知道吗是否得到足够的叶酸还可大大降低患痴呆症的风险吗?
  The Research
  研究调查
  One study conducted involved 166 people: 47 of whom were diagnosed with Alzheimer's, 41 with vascular3 dementia and 36 with a mixed dementia diagnosis4. Additionally, 42 people who did not have cognitive5 impairment were also included in the study. Researchers measured each participants' levels of folate and, after reviewing the results, they found that people with dementia had significantly lower levels of folic acid as compared to those without dementia.
  开展一项涉及166人的研究:其中47人被诊断为老年痴呆症,41人患血管性痴呆和36人确诊为混合痴呆。此外,在这项研究中还包括42个没有认知障碍的人。研究人员测量每个参与者的叶酸水平,在评估结果后,他们发现与那些没有痴呆症患者相比,痴呆症患者的叶酸水平显著降低。
  Does Folic Acid (Vitamin B9) Reduce Risk of Dementia.jpg
  A second study reviewed multiple research studies and concluded that low folic acid levels clearly were associated with the presence of both mild cognitive impairment and dementia.
  第二项研究回顾了多项研究,并指出低的叶酸水平与轻度认知障碍和痴呆现象是有联系的。
  Does Adding Folic Acid to Your Diet Help?
  在你的饮食中添加叶酸有帮助吗?
  Possibly, although the results are not conclusive6 thus far.
  尽管到目前为止结果并不是肯定的,但存在可能。
  One study involving 900 older adults who lived in their own homes found that long-term supplementation with vitamin B12 and folate improved memory.
  一项研究涉及900名住在自己的家里的老年人,研究发现长期补充维生素B12和叶酸可改善记忆。
  Another study which involved administering folic acid to rats found that both short-term and long term memory improved. (Whether this would translate to humans is unknown.)
  另一项研究是关于对老鼠的叶酸实验,发现可改善短期和长期的记忆。(这是否能转化为人类所用尚未知晓)

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1 technically wqYwV     
adv.专门地,技术上地
参考例句:
  • Technically it is the most advanced equipment ever.从技术上说,这是最先进的设备。
  • The tomato is technically a fruit,although it is eaten as a vegetable.严格地说,西红柿是一种水果,尽管它是当作蔬菜吃的。
2 synthetic zHtzY     
adj.合成的,人工的;综合的;n.人工制品
参考例句:
  • We felt the salesman's synthetic friendliness.我们感觉到那位销售员的虚情假意。
  • It's a synthetic diamond.这是人造钻石。
3 vascular cidw6     
adj.血管的,脉管的
参考例句:
  • The mechanism of this anomalous vascular response is unknown.此种不规则的血管反应的机制尚不清楚。
  • The vascular changes interfere with diffusion of nutrients from plasma into adjacent perivascular tissue and cells.这些血管变化干扰了营养物质从血浆中向血管周围邻接的组织和细胞扩散。
4 diagnosis GvPxC     
n.诊断,诊断结果,调查分析,判断
参考例句:
  • His symptoms gave no obvious pointer to a possible diagnosis.他的症状无法作出明确的诊断。
  • The engineer made a complete diagnosis of the bridge's collapse.工程师对桥的倒塌做一次彻底的调查分析。
5 cognitive Uqwz0     
adj.认知的,认识的,有感知的
参考例句:
  • As children grow older,their cognitive processes become sharper.孩子们越长越大,他们的认知过程变得更为敏锐。
  • The cognitive psychologist is like the tinker who wants to know how a clock works.认知心理学者倒很像一个需要通晓钟表如何运转的钟表修理匠。
6 conclusive TYjyw     
adj.最后的,结论的;确凿的,消除怀疑的
参考例句:
  • They produced some fairly conclusive evidence.他们提供了一些相当确凿的证据。
  • Franklin did not believe that the French tests were conclusive.富兰克林不相信这个法国人的实验是结论性的。
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