Myths vs facts: Mikrobiom Test and Schlaf

Claims that a microbiome test can directly explain or fix sleep issues are overstated. Observational studies suggest the gut microbiota influences sleep via the gut-brain axis, e.g., through serotonin precursors or short-chain fatty acids like butyrate. However, a test only shows relative bacterial abundances, not causation. Sleep problems are typically multifactorial (stress, light exposure, hormones, sleep hygiene). Evidence for personalized supplementation based solely on a microbiome test is weak. Fact: A high-fiber diet can boost butyrate production and may indirectly support sleep quality. Myth: The test provides a 'sleep diagnosis'. Reality: It can be part of a holistic approach but should not replace medical evaluation. Evidence grade: mixed – mechanistic and observational links, but lacking robust clinical trials.