Prepare to be amazed by the unsung heroes of our renal system. Our kidneys play an essential role in maintaining the balance of electrolytes in our body, including sodium (salt). Sodium is a vital nutrient required for many bodily functions, such as regulating blood pressure, transmitting nerve impulses, and maintaining fluid balance. 
https://journalseries2.blogspot.com/2023/05/the-remarkable-role-of-kidneys-in-salt.html