Scientists are taking a closer look at how microorganisms living in the gastrointestinal system impact mental health. A new study suggests that bacteria in the gut microbiome is linked to bipolar disorder. The research, published in the Journal of Psychiatric Research, suggests that the microbial population of the gastrointestinal tract plays a role in bipolar disorder. “Recent studies have supported the gut microbiome, the collection of microbes in the digestive tract, as important for mental