Cortisol

Cortisol is a steroid hormone released in response to stress and low blood glucose.

Notable studies

 * 2015, Salivary cortisol responses to household tasks among couples with unexplained chronic fatigue
 * 1998, Urinary free cortisol excretion in chronic fatigue syndrome, major depression and in healthy volunteers

Learn more

 * Wikipedia - Cortisol
 * All You Need to Know About Cortisol and Its Health Effects