肥胖会降低人体维生素D含量
文章来源:未知 文章作者:enread 发布时间:2013-02-06 07:37 字体: [ ]  进入论坛
(单词翻译:双击或拖选)
Obesity1 can lower vitamin D levels in the body, a study suggests. 

研究显示,肥胖会降低体内维生素D含量。
 
The report, in the journal PLOS Medicine, analysed genetic2 data from 21 studies - a total of 42,000 people.
 
It found every 10% rise in body mass index (BMI) - used as an indicator3 of body fat - led to a 4% drop of available vitamin D in the body.
 
As vitamin D is stored in fatty tissue, the authors suggest the larger storage capacity in obese4 people may prevent it from circulating in the bloodstream. 
 
BMI it is calculated by taking weight (in kilograms) and dividing it by height (in metres) squared. Those with a BMI of 30 or above are considered obese. 
 
Lead author Dr Elina Hypponen, from the University College London Institute of Child Health, said the study "highlights the importance of monitoring and treating vitamin D deficiency in people who are overweight or obese". 
 
Vitamin D is made in the skin after sun exposure and can be taken in dietary supplements. 
 
Healthy levels are about 50 nanomole per litre - less than 30 nanomole per litre can cause the softening5 and weakening of bones, leading to rickets6(佝偻病) in children and osteomalacia(软骨病) in adults.
 
Prof David Haslam, from the National Obesity Forum7, said: "Food intake8 and genetics all play a part in obesity - but this research is a reminder9 that physical activity, like walking the dog or going for a run out in the sunshine, shouldn't be forgotten and can help correct both weight and lack of vitamin D."


点击收听单词发音收听单词发音  

1 obesity Dv1ya     
n.肥胖,肥大
参考例句:
  • One effect of overeating may be obesity.吃得过多能导致肥胖。
  • Sugar and fat can more easily lead to obesity than some other foods.糖和脂肪比其他食物更容易导致肥胖。
2 genetic PgIxp     
adj.遗传的,遗传学的
参考例句:
  • It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
  • Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
3 indicator i8NxM     
n.指标;指示物,指示者;指示器
参考例句:
  • Gold prices are often seen as an indicator of inflation.黃金价格常常被看作是通货膨胀的指标。
  • His left-hand indicator is flashing.他左手边的转向灯正在闪亮。
4 obese uvIya     
adj.过度肥胖的,肥大的
参考例句:
  • The old man is really obese,it can't be healthy.那位老人确实过于肥胖了,不能算是健康。
  • Being obese and lazy is dangerous to health.又胖又懒危害健康。
5 softening f4d358268f6bd0b278eabb29f2ee5845     
变软,软化
参考例句:
  • Her eyes, softening, caressed his face. 她的眼光变得很温柔了。它们不住地爱抚他的脸。 来自汉英文学 - 家(1-26) - 家(1-26)
  • He might think my brain was softening or something of the kind. 他也许会觉得我婆婆妈妈的,已经成了个软心肠的人了。
6 rickets 4jbzrJ     
n.软骨病,佝偻病,驼背
参考例句:
  • A diet deficient in vitamin D may cause the disease rickets.缺少维生素D的饮食可能导致软骨病。
  • It also appears to do more than just protect against rickets.除了防止软骨病,它还有更多的功能。
7 forum cilx0     
n.论坛,讨论会
参考例句:
  • They're holding a forum on new ways of teaching history.他们正在举行历史教学讨论会。
  • The organisation would provide a forum where problems could be discussed.这个组织将提供一个可以讨论问题的平台。
8 intake 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。
9 reminder WkzzTb     
n.提醒物,纪念品;暗示,提示
参考例句:
  • I have had another reminder from the library.我又收到图书馆的催还单。
  • It always took a final reminder to get her to pay her share of the rent.总是得发给她一份最后催缴通知,她才付应该交的房租。
TAG标签: body vitamin obesity
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:点击我更换图片