Is Cortisol senken useful for Müdigkeit?

Whether lowering cortisol is useful for fatigue depends on the underlying cause. Cortisol is a key stress hormone; chronically elevated levels (due to chronic stress, poor sleep, or conditions like Cushing's syndrome) can contribute to fatigue, sleep disruption, and brain fog. In such cases, interventions that reduce cortisol – such as stress reduction techniques, improved sleep hygiene, exercise, or medical treatment – may alleviate fatigue. However, fatigue is a highly nonspecific symptom. For most people with normal cortisol levels, further lowering cortisol is not beneficial and may be harmful (e.g., risk of adrenal insufficiency). Evidence for over-the-counter 'cortisol-lowering' supplements (e.g., ashwagandha, phosphatidylserine) is weak, mostly mechanistic or from small studies. Without a confirmed diagnosis of hypercortisolism, routine cortisol lowering is not recommended. A medical workup (e.g., salivary cortisol profile) is advisable if cortisol dysregulation is suspected. In summary: lowering cortisol is useful only when elevated levels are documented; for general fatigue, evidence is insufficient.