The gut microbiome, in addition to promoting the normal function of the blood-brain barrier, also influences our emotions and behavior through the gut-endocrine system, gut-associated immune system, and nervous system. Imbalances in the gut microbiome are often associated with common issues among urban dwellers, such as emotional tension and poor sleep quality.
The gut microbiome has been linked to brain development, hyperactivity disorder, autism, and mood disorders.