In DepthBiomedicine

Gut bacteria linked to mental well-being and depression

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Science  08 Feb 2019:
Vol. 363, Issue 6427, pp. 569
DOI: 10.1126/science.363.6427.569

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Summary

Of all the many ways the teeming ecosystem of microbes in a person's gut and other tissues might affect health, its potential influences on the brain may be the most provocative. Now, a study of two large groups of Europeans has found that several species of gut bacteria are missing in people with depression. The researchers can't say whether the absence is a cause or an effect of the illness, but they showed that many gut bacteria could make substances that affect nerve cell function, and maybe mood. Meanwhile, a Swiss team is testing the effectiveness of fecal transplants in relieving depression.