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.
The amount of sodium in your blood is directly tied to the volume of fluid. Sodium draws water to it and helps keep the amount of fluid in your arteries and veins at the proper level. There is an old saying in medical school, that water follows sodium in the body.