导航

科学美国人60秒:聪明饮食

所属教程:科学美国人60秒科学系列 更新:01-03
00:00/00:00

LRC文本加载中...

点击单词,可查看发音和词义哦。

When Dining For Trillions, Eat Wisely

聪明饮食

You are what you eat, the old expression goes. But it leaves out one crucial detail. "We don't dine alone. We dine with trillions of friends." Jeff Gordon, a microbiologist at Washington University in St Louis. "And they are partners in consuming these meals and ingredients."

俗语云:人如其食。但是,它漏掉了一个重要的细节。“并不是我们自己在用餐。我们是和数万亿的朋友一起用餐。”杰夫·哥顿是圣路易斯华盛顿大学的微生物学家。“并且他们是在一起吃这些食物和原料。”

Those friends--they're microbes in our guts. They break down dinner, including otherwise indigestible stuff, and pass the leftovers on to more microbes. Creating a complex food web inside us.

这些朋友——就是我们肠道里的微生物。这些微生物分解晚餐,如一些难以消化的食物,并且将剩饭剩菜给更多的微生物。这就在我们的体内创造了一个复杂的食物网。

But that microbial garden is a lot more diverse in people who eat a calorie-restricted, veggie-rich diet. The typical American diet on the other hand--breads, meat, cheese, not a lot of veggies--doesn't raise up near as diverse a crop of microbes.

但是,对于那些食用有限的热量、丰富蔬菜饮食的人们,他们体内的微生物花园会更加的丰富多样。美国典型饮食的令一种形式——面包、肉食、奶酪,蔬菜不太丰富——并不提升人体内的微生物丰富程度。

And microbial diversity matters. Because in a mouse model, Gordon's team found that, if you give up the American diet, in favor of a healthier one with lots of veggies--the "Americanized" gut bacteria, being less diverse, aren't primed to respond. They're not great at regrouping, to accommodate all the nutrients in kale and broccoli and so on. The study is in the journal Cell Host & Microbe.

微生物多样性具有重要的作用。因为戈登团队在老鼠的模型中发现,如果放弃美国饮食,而是选择有很多蔬菜更加健康的食物——“美国化”肠道细菌的多样性就会减少,同时并没有准备好回应蔬菜等食物。这些美国化的肠道细菌,不擅长重组,来适应甘蓝和椰花菜等蔬菜中营养物质。该研究结果发表在《细胞宿主和微生物》杂志上。

All this isn't to say you shouldn't try to eat healthier. Because it's not clear how this microbial efficiency translates into human health. Or to what extent you might be able to pick up beneficial microbes from those around you, as they demonstrated mice can, in this study.

以上表明我们应该吃的更加健康。因为,尚不清楚这些微生物的效率在人体健康的情况。或者,在何种程度我们应该从周围的环境中捡起有益的细菌,因为在研究中,研究人员证明了老鼠可以。

But Gordon's colleague Nick Griffin had this prediction: "It's entirely possible that in the future we'll more and more recognize a need to reinstall absent populations of bacteria in people as they're looking to change their diet for benefits to health."

但是,哥顿的同事表示尼克·格里芬曾预测过:“非常有可能,未来随着研究人员调查,改变饮食以有益健 康,我们就会认识到有必要重置人体内细菌的数量。”

Until then - next time you're about to fertilize your microbial flora with a patty melt - you might just wanna do a gut check first.

到那时,你将会用小肉饼给体内的微生物群施肥——但是首先你可能得做一下肠道检查。

最受欢迎的教程

下载听力课堂手机客户端
随时随地练听力!(可离线学英语)