Abstract: The technology described herein is directed to compositions and methods for modulating serotonin in a subject. Described herein are compositions comprising viable or non-viable serotonin modulating bacteria, conditioned medium(s) of serotonin-modulating bacteria, cell pellet(s) of serotonin modulating bacteria, and/or metabolites and/or proteins derived from serotonin-modulating bacteria. Also described herein are methods of treating serotonin-related disease or disorders.

Abstract: The technology described herein is directed to compositions and methods for treating CNS diseases or disorders associated with microbiome dysbiosis. In one aspect, described herein are compositions and methods for treating CNS diseases or disorders associated with a microbiome deficient in queuine biosynthesis. In another aspect, described herein are compositions and methods for treating CNS diseases or disorders associated with a microbiome deficient in endozepine biosynthesis. In another aspect, described herein are compositions and methods for treating CNS diseases or disorders associated with a microbiome deficient in heavy metal sequestration.