Evidence check: Cortisol senken in the context of Schlaf

Cortisol and sleep have a bidirectional relationship: chronically elevated cortisol disrupts sleep, and poor sleep drives cortisol up. The most effective approaches to lower cortisol in the sleep context are evidence-based sleep hygiene (consistent bedtime, reduced screen time and caffeine in the evening, cool sleeping environment) and stress management (mindfulness, breathing exercises). Adaptogens like ashwagandha or rhodiola show moderate effects in small studies but are not established as standard therapy. Salivary cortisol tests (e.g., from MyBody-X) can provide daily profiles but are sensitive to situational fluctuations and do not replace medical evaluation for suspected Cushing's syndrome or adrenal insufficiency. Evidence for direct cortisol-lowering supplements is limited. Bottom line: focus on sleep quality and stress reduction – that is the most robust path.