Gut & Microbiome

How Your Gut Microbiome Shapes the Speed of Your Aging

As we age, the gut microbiome undergoes dramatic changes — declining diversity, shifts in key bacterial species, and altered production of critical metabolites like short-chain fatty acids and bile acids. This review synthesizes current evidence on how these microbial changes contribute to hallmarks of aging including chronic low-grade inflammation, leaky gut, metabolic dysfunction, and disrupted communication between the gut and brain, immune system, and endocrine organs. Importantly, the authors also map out the factors that shape the aging microbiome — diet, medications, lifestyle, and environment — and summarize promising interventions including probiotics, prebiotics, postbiotics, fecal microbiota transplantation, and natural compounds. The gut microbiome emerges as one of the most actionable targets in healthy aging science.