Psychobiotic, nutritional, and behavioral interventions targeting the microbiome-gut-brain axis in depression, anxiety, and stress: a scoping review

Probiotics and psychobiotics are increasingly investigated as microbiome-gut-brain axis (MGBA)-targeted strategies for managing depression, anxiety, and stress-related symptoms, but human evidence remains fragmented across intervention types and biomarker domains. We conducted a scoping review of human intervention studies to map MGBA-targeted psychobiotic, nutritional, dietary, and behavioral ...