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.
Sodium and the Body. Sodium is used in the body to maintain fluid balance, help transmit nerve impulses and help with the contraction and relaxation of muscles. The body require some sodium to maintain function, but that is a minimal 180 to 500 milligrams of sodium per day.