wie erkenne ich, ob ein selbsttest wissenschaftlich fundiert ist? — can a microbiome test help?

To assess whether a self-test is scientifically valid, consider: 1) Was it validated in independent peer-reviewed studies? 2) Are the claimed effects reproducible and clinically meaningful? 3) Does it provide actionable recommendations beyond generic advice? Microbiome tests can be helpful for specific purposes, such as detecting pathogens or characterizing gut flora composition. However, evidence that these tests improve health outcomes is often lacking. Many commercial tests rely on association studies with small effect sizes, similar to DNA-based diet tests. The evidence for microbiome tests in prevention or therapy is currently weak to moderate. Without medical supervision and individual risk assessment, such tests can be misleading. Look for certifications (e.g., CE-IVD) and analysis in accredited laboratories.