Authors
Ioanna Panagiota Kalafati, David Krongauz, Alice Bosco, Antonio Noto, Cristina Piras, Maria Kafyra, Angelica Dessì, Matteo Mauri, Luigi Atzori, Adina Weinberger, Vassilios Fanos, George V Dedoussis, of the BETTER4U consortium
Published in
Obesity reviews : an official journal of the International Association for the Study of Obesity. Pages e70220. Sep 02, 2026. Epub Sep 02, 2026.
Abstract
Obesity arises from intertwined and reciprocal diet-microbiome-host pathways that reshape energy balance, insulin sensitivity, and inflammation. This review synthesizes mechanistic links between microbial functions and metabolic control, charts lifestyle-related lifecourse dynamics from birth to older age, examines how GLP-1-based therapies may perturb gut ecology and metabolite output and surveys AI/ML frameworks for multi-omics integration. Plant-based, fiber-rich dietary patterns generally enrich saccharolytic guilds, boost SCFAs production, and modulate bile acid signaling, whereas Westernized patterns favor bile-tolerant, amino acid-fermenting consortia and proinflammatory metabolites. Preclinical data suggest that incretin-based therapies remodel the microbiome-metabolome axis, but human causal mediation remains unproven and observed changes may partly reflect weight loss or metabolic improvement. Function-centered metrics outperform phylum-level ratios for translation. Harmonized longitudinal cohorts and explainable ML-derived microbial and metabolomic signatures are now pivotal to identify responder subtypes and actionable microbe-metabolite targets, enabling precision nutrition alongside pharmacotherapy across the lifespan.
PMID:
42683734
Bibliographic data and abstract were imported from PubMed on 02 Sep 2026.
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