Scientific American 科學人練聽力,每周都聽鍛鍊英文耳。科普知識跟英文可以同時成長。






教練最近都在整理英文聽力的講義,並且重新把連結上傳,給需要鍛鍊英文聽力的人下載。日後還會有全新的英聽單元登場多收聽科學人可以累積科普知識,對於提升英文聽力程度還有各項英文考試都很有幫助喔。每周一篇NPR加上Scientific American持續不間斷,幾個月後你將會發現自己擁有敏銳的英文耳。

Staying Healthy Takes Guts Full of Microbes

People whose intestines have smaller and less diverse bacterial populations are more prone to obesity and gut inflammation.

Sophie Bushwick reports

Everywhere you go, the trillions數以兆計(無數個) of microbes微生物/ in your gut腸道 go too. And that's a comforting thought想到這裡就令人感到安慰. Because according to a new study, a more diverse population of intestinal bacteria腸道細菌 is linked to better health. The work is in the journal Nature.

Danish 丹麥researchers gathered gut microbes from almost 300 obese and non-obese adults. The intestines of roughly one in four participants contained fewer and less diverse bacteria than average. And members of this group were more likely to be更可能變得 obese and to suffer from罹患 gut inflammation發炎.

By looking for only a few specific bacteria, researchers could predict預測 whether a subject受測對象 fell into掉入 the low-diversity不具多樣性的group. Certain species 種類could even indicate指出 whether an individual was slim or overweight. And these microbial markers標示 might also serve as signs of future health risks—because low-diversity participants who were obese were more likely to gain additional weight over time.

But a low-diversity gut won't necessarily doom危及your health. According to another study in the same journal, it's possible to increase microbial diversity by developing a decent diet吃得健康. Remember, you’re eating for trillions你得為肚子裡數不清的腸道好菌著想.





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