Sodium is a vital nutrient. It’s a major component of extracellular fluid, and is essential for maintaining the volume of the plasma to allow adequate tissue perfusion and normal cellular metabolism.  Besides helping to maintain fluid balance and cardiovascular function, sodium and chloride ions also play an important role in the nervous system. Chris Kresser author & writer of “Shaking up the Salt Myth: The Human Need for Salt” on Lets take back your health under ChrisKressner.com.