减肥手术能使肥胖的人减少患癌风险
文章来源:未知 文章作者:enread 发布时间:2014-06-06 07:03 字体: [ ]  进入论坛
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Weight loss surgery might have more value than simply helping1 morbidly2 obese3 people to shed unhealthy extra pounds. It reduces their risk of cancer to rates almost similar to those of people of normal weight. This is the conclusion of the first comprehensive review article taking into account relevant studies about obesity4, cancer rates and a weight loss procedure called bariatric(肥胖症治疗学) surgery. Published in Springer's journal Obesity Surgery, the review was led by Daniela Casagrande of the Universidade Federal do Rio Grande do Sul in Brazil. With bariatric surgery, a part of a patient's stomach is reduced to a small pouch5. This pouch is attached directly to the small intestine6, bypassing most of the rest of the stomach and the upper part of the small intestine(肠) to ensure long-term weight loss and to reduce the chances of early deaths due to severe obesity. Cancer rates in obese people are as high as 2.12 cases per 1,000 person-years.
 
Because previous studies suggested a relationship between bariatric surgery and reduced cancer risk among obese people, Casagrande and her colleagues set out to shed light on these claims. They contrasted and combined results from 13 relevant studies that focus on the incidence of cancer in patients following bariatric surgery. These include both controlled and uncontrolled studies, and the relevant information of 54,257 participants.Their systematic7 review shows that bariatric surgery is associated with a reduction in the incidence of cancer among morbidly obese patients.
 
They found that cancer only occurred in 1.06 cases per 1,000 person-years, up to 23 years after the surgery was performed. This is markedly better than the rate for the global population of obese people.
 
Importantly, the effect of bariatric surgery was found within both controlled and uncontrolled studies. Four controlled studies showed that bariatric surgery was associated with a reduction in the risk of cancer. It is still unknown whether the lower cancer rates following bariatric surgery are related to the metabolic8 changes associated with weight loss, or if lower body mass indexes (BMIs) following surgery result in earlier diagnosis9 and improved cancer treatment outcomes among patients.
 
According to Casagrande, it is difficult to separate the effects of the surgery from the multiple associated changes it yields in patients. She believes that undergoing a surgical10 procedure of the magnitude of bariatric surgery raises awareness11 and possible earlier diagnosis of cancer among such patients."Bariatric surgery is associated with reduced cancer risk in morbidly obese people," says Casagrande. However, she cautions that conclusions should be drawn12 with care because there was high heterogeneity13 among the studies. She continued that there were some limitations about the data available among the studies, and that variables associated with cancer should still be measured in prospective14 bariatric surgery trials.


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1 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。
2 morbidly 0a1798ce947f18fc75a423bf03dcbdba     
adv.病态地
参考例句:
  • As a result, the mice became morbidly obese and diabetic. 结果,老鼠呈现为病态肥胖和糖尿病。 来自互联网
  • He was morbidly fascinated by dead bodies. 他对尸体着魔到近乎病态的程度。 来自互联网
3 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。
4 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。
5 pouch Oi1y1     
n.小袋,小包,囊状袋;vt.装...入袋中,用袋运输;vi.用袋送信件
参考例句:
  • He was going to make a tobacco pouch out of them. 他要用它们缝制一个烟草袋。
  • The old man is always carrying a tobacco pouch with him.这老汉总是随身带着烟袋。
6 intestine rbpzY     
adj.内部的;国内的;n.肠
参考例句:
  • This vitamin is absorbed through the walls of the small intestine.这种维生素通过小肠壁被吸收。
  • The service productivity is the function,including external efficiency,intestine efficiency and capacity efficiency.服务业的生产率是一个包含有外部效率、内部效率和能力效率的函数。
7 systematic SqMwo     
adj.有系统的,有计划的,有方法的
参考例句:
  • The way he works isn't very systematic.他的工作不是很有条理。
  • The teacher made a systematic work of teaching.这个教师进行系统的教学工作。
8 metabolic 2R4z1     
adj.新陈代谢的
参考例句:
  • Impressive metabolic alternations have been undergone during embryogenesis.在胚胎发生期间经历了深刻的代谢变化。
  • A number of intoxicants are associated with metabolic acidosis.许多毒性物质可引起代谢性酸中毒。
9 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。
10 surgical 0hXzV3     
adj.外科的,外科医生的,手术上的
参考例句:
  • He performs the surgical operations at the Red Cross Hospital.他在红十字会医院做外科手术。
  • All surgical instruments must be sterilised before use.所有的外科手术器械在使用之前,必须消毒。
11 awareness 4yWzdW     
n.意识,觉悟,懂事,明智
参考例句:
  • There is a general awareness that smoking is harmful.人们普遍认识到吸烟有害健康。
  • Environmental awareness has increased over the years.这些年来人们的环境意识增强了。
12 drawn MuXzIi     
v.拖,拉,拔出;adj.憔悴的,紧张的
参考例句:
  • All the characters in the story are drawn from life.故事中的所有人物都取材于生活。
  • Her gaze was drawn irresistibly to the scene outside.她的目光禁不住被外面的风景所吸引。
13 heterogeneity YrOzI2     
n.异质性;多相性
参考例句:
  • The heterogeneity and uneven development of China's economy are rather advantageous in the war of resistance.中国经济的不统一、不平衡,对于抗日战争反为有利。
  • In heterogeneity is creation of the world.世界产生自异质性。
14 prospective oR7xB     
adj.预期的,未来的,前瞻性的
参考例句:
  • The story should act as a warning to other prospective buyers.这篇报道应该对其他潜在的购买者起到警示作用。
  • They have all these great activities for prospective freshmen.这会举办各种各样的活动来招待未来的新人。
TAG标签: weight surgery cancer
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