Cortisol

Cortisol is a hormone produced by the adrenal glands. It is key in regulating the body's metabolism, immune system, and blood pressure. Its production varies throughout the day and is known as the “stress hormone,” as its levels rise when a person is under stress. Cortisol has various uses in medical treatments, including treatment for asthma, allergies, and inflammation. It is also a component of many medications for hormone replacement therapy and for treating Cushing’s syndrome. Recently, it has been studied as an important component in the regulation of mood and anxiety. In addition, cortisol levels are often used to diagnose adrenal and pituitary gland problems. As such, cortisol is an essential hormone in the human body and is important to multiple aspects of human health.