Posted 5/24/2020 5:32 AM (GMT -5)
That's a very good (and very complex) question!
Cortisol is the active hormone produced by the adrenal glands. It is metabolized (by enzymes) into cortisone in the body, which is the inactive form. That inactive cortisone in the body can also convert back to cortisol. In the body, cortisone is also a natural substance - not to be confused with synthetic cortisone.
So there is always a balance between cortisol and cortisone. Cortisol can activate mineralocorticoid receptors, whereas cortisone cannot.
People produce cortisol (and cortisone) in greatly varying amounts.
The synthetic cortisone that is given to patients affects the balance between cortisol and cortisone. It rapidly subdues inflammation, but also has many unwanted side effects, including potentially causing a shutdown of natural cortisol production.