Gut microbiome-centric nutritional strategies in inflammatory bowel disease: Modulating dysbiosis for therapeutic benefit

Inflammatory bowel disease (IBD), encompassing Crohn's disease and ulcerative colitis, arises from complex interactions among genetics, immunity, environmental triggers, and, critically, the gut microbiome. Dysbiosis – marked by a loss of beneficial microbes and expansion of pro-inflammatory taxa – plays a pivotal role in disease pathogenesis. This review highlights the central role of gut microbiota in IBD and explores evidence-based nutritional interventions aimed at restoring microbial balance and immune regulation. Dietary fiber, prebiotics, and fermented foods promote short-chain fatty acid production and barrier integrity, while omega-3 fatty acids and polyphenols modulate inflammatory pathways. Exclusive enteral nutrition (EEN), especially in Crohn's disease, alters microbial profiles and reduces mucosal inflammation. Targeted micronutrient supplementation addresses common deficiencies impacting immune function. Through the lens of microbiota modulation, dietary therapy emerges not merely as supportive care, but as a primary therapeutic tool in IBD management. Microbiome-directed nutrition offers promising adjunctive strategies to induce and maintain remission.