How healthily can a person live with only one adrenal gland?

Adrenal function. Typically, when there are two organs and one is removed, the other compensates and under normal, non-stressed situations, the person should do find. However, since the adrenal gland is a "life saving" - "fight or flight" gland, one gland when over stressed may lead to adrenal hypofuction, with symptoms similar to addison's disease. So remember to minimize your stress and excercise relaxation.