Common mistakes around Cortisol Frauen

A common mistake is treating cortisol as a standalone stress or fatigue marker without accounting for its circadian rhythm. Cortisol fluctuates throughout the day; a single measurement (saliva, blood, or urine) is rarely diagnostic. Many direct-to-consumer tests claim to detect 'adrenal fatigue' or 'burnout' via cortisol levels, but the concept of adrenal fatigue is not recognized by endocrinology. Genetic variants like COMT or BDNF are sometimes marketed as 'stress genes,' but their effect sizes are small and context-dependent. In women, menstrual cycle, pregnancy, and menopause further modulate cortisol, making interpretation even more complex. Relying on unvalidated home tests can lead to false reassurance or unnecessary worry. Clinically relevant disorders (Cushing's, Addison's) require specialized testing (e.g., dexamethasone suppression, ACTH stimulation). The evidence for consumer cortisol or stress-related DNA tests is weak to unclear. Lifestyle interventions (sleep, exercise, stress management) remain the most evidence-based approach for perceived stress symptoms.