Yes, gut bacteria have been found to play a role in depression. The gut and brain are connected through the gut-brain axis, which is a complex communication system that connects the central nervous system to the enteric nervous system, located in the gut. This connection allows for bidirectional communication between the gut and brain, and disruptions in this communication have been linked to depression and other mental health conditions.Studies have found that imbalances in the gut microbiome, which is the collection of microorganisms that...