There are two adrenal glands, each sitting on top of the kidneys. They produce essential hormones, including cortisol, aldosterone, and the sex steroids estrogen and testosterone. Cortisol helps the body respond to stress and influences our glucose metabolism while aldosterone controls the balance of electrolytes including sodium and potassium. The adrenal glands also produce epinephrine and norepinephrine. Together these hormones contribute to the “flight or fight” response to rigorous activity and stress. These glands are redundant organs such that the removal of one gland does not interfere with normal production and function of hormones from the remaining gland.