美国科学60秒 SSS 2013-08-30（在线收听）

 　　Everywhere you go, the trillions of microbes in your gut go, too. And that's a comforting thought, because according to a new study, a more diverse population of intestinal bacterias is linked to better health. The work is in the journal Nature. Danish researchers gather gut microbes from more than three hundreds obese or nonobese adults. the intestines a roughly one in four participants contained fewer and less diverse bacteria than average. and members from this group were more likely to be obese and suffer from gut inflammation. By looking for only a few specific bacteria, researchers could predict whether a subject violent to the low diversity group. certain species would even indicated whether an individual was slimmer over away. And this microbial makers might also serve in science for future health risks, because low diversity participants who were obese were more likely to gain additional weight over time. But low diversity gut won't necessarily doom your health. According to another study in the same journal, it's possible to increase microbial diversity by developing a decent diet. Remember, you are eating for trillions