Cortisol

Cortisol, also known as Serum Cortisol or Hydrocortisone, is a steroid hormone produced by the adrenal glands in response to stress and low blood-glucose concentration. It plays a crucial role in various bodily functions, including metabolism regulation, immune response modulation, and stress response. The hypothalamus-pituitary-adrenal axis (HPAA) regulates cortisol production, and its levels can be measured in serum, urine, and saliva. Clinically, cortisol is essential for diagnosing and managing conditions such as Cushing's syndrome, adrenal insufficiency, and stress-related disorders. Elevated cortisol levels can indicate chronic stress, Cushing's syndrome, or severe infections, while low levels may suggest adrenal insufficiency or Addison's disease. In the context of athletic performance and biohacking, cortisol is monitored for its impact on recovery, stress management, and overall hormonal balance. Athletes and biohackers often aim to optimize cortisol levels to enhance performance and longevity. However, cortisol levels are subject to diurnal variation, peaking in the early morning and declining throughout the day. Factors such as stress, illness, and medication can also influence cortisol levels, making it crucial to consider these variables when interpreting test results.