Our study suggests that low cortisol could be playing a key role in driving many of these physiological changes that people are experiencing with Long COVID." Matthew Frank, PhD, lead author ...

Levels can also dip too low. When that happens for an extended period of time, “it’s either because the adrenal gland, which produces cortisol, isn't getting the proper stimulation from the ...

While there are many ways of measuring how much stress a person may be dealing with, the most reliable biomarker for stress estimation is one's cortisol levels. Here's what cortisol is ...