He has written for Foreign Policy,The Guardian, Foreign Affairs, Politico and a host of other publications. The Interpreter Joins RFE/RL. We are proud to announce that, starting January 1, 2016, The Interpreter will be a special project of Radio Free Europe/Radio Liberty.
1 Sodium plays a large role in fluid balance, with different variations of sodium determining the shift of water by osmosis from one area of the body to another.  Along with chloride and bicarbonate, sodium is important for the proper regulation of the acid-base balance of the body.
Functions: Potassium is very important in the human body. Along with sodium, it regulates the water balance and the acid-base balance in the blood and tissues. Potassium enters the cell more readily than does sodium and instigates the brief sodium-potassium exchange across the cell membranes.