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中国临床营养网（lcyycc） 作者介绍 素无尘 《中国临床营养网》 签约作者、形象使者 美国综合排名12名校（Washington University in St Louis）研究生公共健康专业、医学博士预科毕业；
吃核桃，可以改变肠道菌群？ 2017年7月6号被《The Journal of Nutritional Biochemistry》接受的一篇关于核桃的文章表明：核桃加在饮食中，可以改变肠道细菌的组成，有助于改善身体健康，再给你一个要吃核桃的理由。 "Walnuts have been called a 'superfood' because they are rich in the omega-3 fatty acid, alpha-linoleic acid and fiber, and they contain one of the highest concentrations of antioxidants," notes Dr. Byerley. "Now, an additional superfood benefit of walnuts may be their beneficial changes to the gut microbiota." 这篇文章的第一作者是路易斯安娜州立大学新奥尔良健康医学中心生理学研究副教授（Research Associate Professor of Physiology at LSU Health New Orleans School of Medicine）Lauri Byerley 博士、注册营养师，她说：“核桃被称为‘超级食物’，因为富含对人体有益处的欧米茄3脂肪酸、阿尔法亚油酸和纤维，同时还含有最丰富的抗氧化剂。现在，核桃的价值可能还在于可以改变肠道菌群。 Working in a rodent model, the research team added walnuts to the diet of one group. The diet of the other group contained no walnuts. They then measured the types and numbers of gut bacteria in the descending colon and compared the results. They found that there were two distinct communities of bacteria in the groups. In the walnut-eating group, the numbers and types of bacteria changed, as did the bacteria's functional capacity. The researchers reported a significant increase in beneficial bacteria like Lactobacillus. 她的研究小组以小白鼠作为实验体，在一组老鼠的食物中加入了核桃，另一组的饮食中没加，随后测量了下行结肠中肠道细菌的种类和数量，并对结果进行比较。研究人员发现这两组小鼠的肠道细菌群落有很大不相同；在吃核桃的一组中，细菌的数量和种类及功能都发生了变化，一些益生菌（如乳酸菌）更是显著的增加。 "We found that walnuts in the diet increased the diversity of bacteria in the gut, and other non-related studies have associated less bacterial diversity with obesity and other diseases like inflammatory bowel disease," says Byerley. "Walnuts increased several bacteria, like Lactobacillus, typically associated with probiotics suggesting walnuts may act as a prebiotic." Byerley教授说，我们发现，饮食中加入核桃可以增加肠道细菌的多样性。肠道细菌多样性减少，在其他的研究中已经被证明与肥胖和一些肠道炎症疾病相关。吃核桃增加了一些肠道益生菌，这表明吃核桃对人体的作用可能跟益生菌类似。 Prebiotics are dietary substances that selectively promote the numbers and activity of beneficial bacteria. 益生菌是一种有选择性地促进有益菌数量和活性的膳食物质。 "Gut health is an emerging research area, and researchers are finding that greater bacterial diversity may be associated with better health outcomes," adds Byerley. Byerley补充说：“肠道健康是一个新兴的研究领域，大量研究人员发现，更多的细菌多样性可能与更好的健康有关。” The researchers conclude that the reshaping of the gut microbe community by adding walnuts to the diet suggests a new physiological mechanism to improve health. 最后研究人员总结说，通过在饮食中添加核桃来改善肠道微生物群落，这可能是一种新的生理机制来改善健康。 Eating walnuts has been associated with reduced cardiovascular disease risk, slower tumor growth in animals and improved brain health. 吃核桃可以降低患心血管疾病的风险，降低动物的肿瘤生长速度，改善大脑健康，还可以增加益生菌改善肠道健康（今天的文章提到的）。 Resource: https://www./releases/2017/07/170728100832.htm Lauri O. Byerley, Derrick Samuelson, Eugene Blanchard, Meng Luo, Brittany N. Lorenzen, Shelia Banks, Monica A. Ponder, David A Welsh, Christopher M. Taylor. Changes in the Gut Microbial Communities Following Addition of Walnuts to the Diet. The Journal of Nutritional Biochemistry, 2017; DOI: 10.1016/j.jnutbio.2017.07.001 《中国临床营养网》编辑部 本站动态栏： |
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