The microbial ecosystem in the human gut can switch from one stable state into another, without staying for a long time in between. Key groups of bacteria tend to be either nearly absent, or relatively abundant in any given individual. This discovery highlights fundamental organizing principles of the intestinal ecosystem and they suggest novel strategies for diagnostic purposes and therapeutic manipulation to improve well-being and health. An international research team from the University of Helsinki and Wageningen University published their findings in Nature Communications on July 8.
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