Is an essential nutrient required for health. Sodium cations are important in neuron (brain and nerve) function, and in influencing osmotic balance between cells and the interstitial fluid and in maintenance of total body fluid homeostasis. Extra intake may cause a harmful effect on health. Sodium is naturally supplied by salt intake with food.
An element that is a member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23. With a valence of 1, it has a strong affinity for oxygen and other nonmetallic elements. Sodium provides the chief cation of the extracellular body fluids. Its salts are the most widely used in medicine. (From Dorland, 27th ed) Physiologically the sodium ion plays a major role in blood pressure regulation, maintenance of fluid volume, and electrolyte balance.
Required listing on nutrition label. Sodium is a mineral and needed for normal function of nerves and muscles. It helps maintain normal blood volume and blood pressure. It occurs naturally in some foods, and may be added during processing to preserve or enhance flavor. “Salt Free” meets the requirement for sodium-free, that is, unsalted, with- out salt added, or no salt added.