Harnessing the Gut Microbiome Through Dietary Intervention: Implications for Obesity Management

Author : Akshra Verma

Abstract : The gut microbiome, often termed our "second genome," comprises approximately 5,000 species and contains metabolic capabilities far exceeding those encoded in the human genome's 23,000 genes. This presentation explores the critical role of the gut microbiome in obesity pathophysiology and its modulation through targeted dietary interventions. The microbiome performs essential metabolic, protective, and structural functions, including fermentation of non-digestible substrates, bile acid biotransformation, vitamin production, and regulation of energy extraction. Data from the American Gut Project demonstrates that individuals consuming more than 30 different plant types weekly exhibit significantly higher gut microbial diversity compared to those with limited dietary variety. Dysbiosis, characterized by microbial imbalance, has been implicated in obesity through multiple mechanisms including altered short-chain fatty acid production, reduced GLP-1 secretion, and compromised intestinal barrier function. Fiber-deficient diets particularly impact the microbiome, with studies showing that insufficient microbiota-accessible carbohydrates force gut bacteria to consume the protective mucin layer. This presentation provides evidence-based, practical strategies for restoring healthy gut microbiome composition through graduated dietary fiber introduction, incorporation of prebiotic foods including resistant starch sources, and strategic use of fermented foods. The current limitations of commercial probiotics and importance of balanced diet in obesity management will be discussed.

Keywords : Gut Microbiome, Obesity Management, Dietary Fiber, Prebiotics, Dysbiosis, Metabolic Health, Nutritional Intervention

Conference Name : International Conference on Advances in Obesity Research and Management (ICAORM - 26)

Conference Place : Pilsen, Czech Republic

Conference Date : 17th Feb 2026