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<p>New research from the University of Chicago shows that some groups of bacteria int the gut are amazingly resourceful, with a large repertoire of genes that help them generate energy for themselves and potentially influence human health as well.</p>

Peptide YY (PYY), a hormone produced by gut endocrine cells that was already known to control appetite, also plays an important role in maintaining the balance of fungi in the digestive system of mammals, according to new research from the University of Chicago.