Is Stuhlprobe useful for Stress?

The usefulness of a stool sample for assessing stress is not well supported by current evidence. Stool tests (microbiome analysis) can characterize gut bacteria composition. There is emerging mechanistic research on the gut-brain axis linking the microbiome to stress responses. However, the evidence for a direct, clinically actionable link between a single stool test and an individual's stress level is weak. Most commercial tests are not validated for stress diagnosis. They may provide general insights into gut health, which could indirectly relate to well-being, but they cannot measure stress reliably. For stress assessment, validated psychological questionnaires or biomarkers like salivary cortisol are more appropriate. Caveat: Without medical guidance, stool tests may lead to misinterpretation or unnecessary interventions.