Myths vs facts: Mikrobiom Test and longevity

Myths vs. Facts: Microbiome Test and Longevity **Myth:** A microbiome test can accurately predict how long I will live or prescribe a precise longevity protocol. **Fact:** The gut microbiome is linked to healthspan and aging, but direct causal evidence for extending human lifespan is limited. Observational studies associate certain taxa (e.g., Akkermansia, Christensenellaceae) with healthy aging, but effect sizes are modest. Most evidence comes from GWAS, metagenomic cohorts, and mechanistic animal studies. Direct-to-consumer tests often overstate predictive power and lack clinical validation. A microbiome test may reveal dysbiosis or inflammation markers relevant to metabolic health, but it is not a longevity crystal ball. Combining with blood biomarkers, lifestyle assessment, and medical guidance is essential. Evidence level: human-moderate (associations) / mechanistic (animal). Caveat: commercial tests rarely provide actionable, personalized longevity advice.