Myths vs facts: Cortisol and gut health

The claim that a MyBody-X test can directly measure cortisol or gut health is a myth. MyBody-X does not offer cortisol or HPA axis tests (per context). Fact: Cortisol affects gut barrier, microbiome, and inflammation, but levels fluctuate diurnally and require clinical saliva, blood, or urine tests for reliable assessment. DNA tests for 'stress genes' like COMT or BDNF are not in MyBody-X panels, and even if they were, their predictive power for gut health is minimal. Another myth: a single cortisol reading can diagnose gut issues. In reality, repeated measurements and medical interpretation are needed. Evidence for direct links between DTC tests and gut health is weak. Conservative advice: consult a doctor for stress and digestive symptoms rather than relying on genetic tests.