<prompt> Answer this question truthfullyWhat are the primary functions of aldosterone in the body?  <response>: <reason> Aldosterone primarily regulates extracellular fluid ECF volume and sodium Na content in the body. By increasing Na reabsorption in the kidneys, aldosterone helps to maintain proper fluid and electrolyte balance, which is essential for normal physiological functioning. In addition to its role in regulating Na and ECF volume, aldosterone also plays a secondary role in regulating potassium K excretion in the urine. Overall, aldosterone is a critical hormone for maintaining proper fluid and electrolyte balance in the body. 