Dietary Modulation of Gut Microbial Diversity: Evidence-based Nutritional Strategies for Obesity Prevention and Treatment
Author : Dr. Akshra Verma
Abstract : The human gut microbiome encompasses approximately 5,000 microbial species whose collective metabolic capacity substantially exceeds that of the 23,000 genes within the human genome. This presentation examines how gut microbial communities influence obesity development and progression, and how strategic nutritional interventions can modulate these communities to support weight management. The microbiome contributes essential metabolic, immunological, and structural functions, including breakdown of indigestible dietary components, bile acid metabolism, synthesis of vitamins, and control of energy harvest from food. Analysis from the American Gut Project reveals that individuals who consume over 30 distinct plant varieties per week display markedly greater microbial diversity than those with restricted dietary patterns. Microbial dysbiosis—an imbalance in gut bacterial composition—contributes to obesity pathogenesis through several pathways: disrupted short-chain fatty acid synthesis, diminished glucagon-like peptide-1 release, and impaired intestinal barrier integrity. Diets low in dietary fiber exert particularly detrimental effects on the microbiome; research indicates that when microbiota-accessible carbohydrates become scarce, intestinal bacteria resort to degrading the protective mucus layer. This presentation offers evidence-based, actionable approaches for rebuilding beneficial microbial populations through progressive fiber supplementation, integration of prebiotic-rich foods such as resistant starch sources, and judicious incorporation of fermented products. The presentation will also address current constraints of commercially available probiotic supplements and emphasize the foundational role of comprehensive dietary approaches in obesity intervention.
Keywords : gut microbiome, obesity management, dietary fiber, prebiotics, dysbiosis, metabolic health, nutritional intervention.
Conference Name : International Conference on Advances in Nutrition, Obesity and Food Science (ICANOFS-26)
Conference Place : Delhi, India
Conference Date : 11th Apr 2026
