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　　据国外媒体6月17日报道，最新一项研究表明，血液中维生素B含量高的吸烟者，他们患肺癌的风险更小。
　　这项针对40万人的研究显示，血液中维生素B6和蛋氨酸(一种氨基酸)的含量高，可以使吸烟者患肺癌的风险降低一半。国际癌症研究机构(IARC)的科学家表示，研究结果可能说明了部分吸烟者从不患肺癌以及部分不吸烟或以前吸过烟的人患肺癌的原因。
　　肺癌是世界上最常见的癌症类型，90%的病例由吸烟引起，全球每年有120万人死于这种癌症。每10个吸烟者当中就有一个会染上肺癌，他们常常死于其他与吸烟有关的原因，如心脏病、中风和肺气肿。研究显示不吸烟的人或多年前戒烟的人也会患上肺癌。
　　进行这项研究的科学家保罗-布伦南说：“根据我们的发现，维生素B6和蛋氨酸与肺癌风险之间存在着密切联系，但我们的研究并未发现它们会使患肺癌风险上升。这表明饮食习惯可能在肺癌患病过程中起着至关重要的作用。”
　　参与这项研究的大多数肺癌患者都是吸烟人，但也有100人从不吸烟，还有260人已经戒烟。布伦南表示，这三组人患肺癌风险的高低变化与血液中维生素B6和蛋氨酸含量的关系都是相同的。布伦南说：“只要维生素B6和蛋氨酸这两种营养成分充足，患肺癌风险就降低60%左右。不过很显然患这种癌症的风险偏高是因为你吸烟，所以你最好还是将烟戒掉。”
　　最新研究结果支持了以前的一项研究，该研究显示维生素B不足或增加DNA受损及由此导致的基因突变的几率。瑞典科研人员在2005年实施的一项研究发现，血液中维生素B6含量高的女性，患结肠直肠癌的风险更低。布伦南说：“这些维生素B和营养物基本上都与负责生成和维持DNA的通道有关。所以，你显然希望这条通道尽可能保持运转。”

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==== 汉译英 ====

According to foreign media reports on June 17, a new study shows that high blood levels of vitamin B smokers, their risk of lung cancer smaller.
The study of 40 million people, the blood vitamin B6 and methionine (an amino acid) content is high, so that smokers can reduce the risk of lung cancer by half. IARC (IARC) scientists said the findings may indicate that some of the never smokers and some non-smoking lung cancer or those who previously smoked, lung cancer causes.
Lung cancer is the most common type of cancer, 90% of cases caused by smoking, the world's 120 million people each year die from cancer. Among every 10 smokers will have a contracted lung cancer, they often die of other smoking-related causes, such as heart disease, stroke and emphysema. Studies have shown that non-smokers or who quit smoking years ago, also suffering from lung cancer.
Scientists conducting the study, Paul - Brennan said: "According to our findings, vitamin B6 and methionine and the risk of lung cancer there is a close link between, but our study did not find that they will suffer from increased risk of lung cancer. This shows that lung cancer in dietary habits may play a crucial role in the process. "
Participate in this study most of the patients with lung cancer are smokers, but there are 100 people who never smoked, there are 260 people have quit smoking. Brennan said that the three groups of people changing the level of risk of lung cancer and blood vitamin B6 and methionine content of the relationship are the same. Brennan said: "As long as vitamin B6 and methionine both adequate nutrition, reduced lung cancer risk of 60%. But it is clear that the high risk of suffering from this cancer because you smoke, so you'd better be smoke to quit. "
Recent results support a previous study, the study shows that vitamin B deficiencies or increased DNA damage and the resulting risk of mutation. Swedish researchers implemented in 2005, a study found that high blood levels of vitamin B6 female, lower risk of colorectal cancer patients. Brennan said: "These B vitamins and nutrients are basically responsible for generation and maintenance of DNA in the channels. So, you obviously want to keep running this channel as much as possible."