![Aging and competition for nutrients determine changes in gut bacteria](https://d2jx2rerrg6sh3.cloudfront.net/image.axd?picture=2018%2f10%2fBy_urfin_0f4bf51816024cc291465b30892da849-150x125.jpg)
Aging and competition for nutrients determine changes in gut bacteria
Two studies with surprising discoveries: in the elderly, the bacterium E. coli evolves in a way that can become potentially pathogenic and increase the risk of disease and, according to data obtained in another study, the metabolism of the same bacterium present in the microbiota evolves differently if it is alone or accompanied by other bacteria.
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