肺癌

    一项最新研究显示，与那些很少吃含维生素K食品的人相比，从食品中摄入较多维生素K的人患癌症和死于癌症的风险可能更低，尤其是肺癌或前列腺癌。
　　维生素K以两种天然形式存在：维生素K1或者叶绿醌，常存在于绿色叶状蔬菜和一些植物油中，如卡诺拉油菜籽和大豆油；维生素K2或者甲基萘醌类，肉和奶酪是它的首要食物来源。在这项新研究中，维生素K2与患上癌症和死于癌症的风险有关，研究参与者获得维生素K2的主要食品是奶酪，而维生素K1无癌症风险无关。这一发现是根据24340名德国成年人的研究数据得出的，这些志愿者年龄为35岁到64岁，在研究开始时未患癌症。研究人员通过详细的饮食调查评估了这些受试者平常的维生素K摄入量。
　　在美国，摄入维生素K(以各种形式)的日推荐量为男性120毫克，女性90毫克。在这项新研究中，通过饮食摄入维生素K最多的男子组每天可获得92毫克或者更多，摄入维生素K最多的女子组每天摄入至少84毫克。
　　在接下来的10年研究中，1755名参与者被诊断患有结肠癌、乳癌、前列腺或者肺癌，其中458人在研究期间去世。从理论上讲，维生素K本身可对癌症有些许预防作用。它常用来中和大剂量的血液稀释剂，尽管血液稀释剂的剂量与癌症没有明显联系。但是，在实验室研究中，林赛辛和同事指出，这种维生素被发现可抑制癌症细胞生长，增进细胞凋亡——异常细胞自己死掉的过程。
　　该研究报告发表在《美国临床营养学杂志》上，这应该是第一次研究摄入维生素K和患癌症和死于癌症风险之间的联系。之前的一项研究显示，维生素K可降低前列腺癌风险。该研究未证明摄入较多维生素K有助于降低特定癌症的风险。但是，海德尔堡德国癌症研究中心的雅各布·林赛辛博士指出，他们为尝试解决这一问题的未来研究打下了基础。

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A recent study showed that those eating very little food with vitamin K when compared to more from the food intake of vitamin K, who died of cancer and may lower the risk of cancer, especially lung cancer or prostate cancer.
Vitamin K exists in two natural forms: vitamin K1 quinone or leaf green, often found in green leafy vegetables and some vegetable oils such as canola and soybean oil; vitamin K2 or menaquinones, meat and cheese is its primary food source. In the new study, vitamin K2 with cancer and died of cancer risk for study participants were the main food of vitamin K2 is cheese, but no cancer risk of vitamin K1. This finding is based on 24,340 German research data derived from adults, these volunteers aged 35 to 64 years in the beginning of the study is not cancer. The researchers assessed by detailed dietary survey of these subjects the usual vitamin K intake.
In the U.S., intake of vitamin K (in various forms) for the male daily recommended amount of 120 mg, 90 mg female. In the new study, by dietary intake of vitamin K available to most men 92 milligrams per day or more, intake of vitamin K intake of most of the women at least 84 milligrams a day.
In the next 10 years study, 1,755 participants were diagnosed with colon, breast, prostate or lung cancer, in which 458 people died during the study period. In theory, vitamin K itself can be slightly on the cancer preventive effect. It is often used and in large doses of blood thinner, although the dose of blood thinner no obvious link with cancer. However, in laboratory studies, Lin Saixin and colleagues point out that this vitamin was found to inhibit cancer cell growth and promote apoptosis - the process of abnormal cells themselves die.
The study, published in the "American Journal of Clinical Nutrition", this should be the first study of vitamin K intake and risk of cancer and died of the link between cancer risk. A previous study showed that vitamin K may reduce the risk of prostate cancer. The study did not show higher intake of vitamin K to help reduce the risk of specific cancers. However, 海德尔堡德 National Cancer Research Center Dr. James Bulinsaixin, they try to solve this problem and lay the foundation for future research.