As medicine advances over the decades, more and more information is made available to the public about the human body and how it functions. In recent years cortisol has been in the public eye via the media and in medical literature. What it is and how it affects the body has been a widely discussed subject for many years by medical personnel as well non medical people who are interested in the latest issues with regard to health. Cortisol is one of many hormones in the body. It is produced by both males and females in the body's adrenal glands. Cortisol has several functions including increasing blood sugar and immune system suppression among other functions. However, it is cortisol's affect on the body when it is under stress that is the cause of concern for many people.