Sodium is an extremely important electrolyte and an essential ion present in the extracellular fluid (ECF). One of the health benefits of sodium is the pivotal role it plays in enzyme operations and muscle contraction. It is very important for osmoregulation and fluid maintenance within the human body. Some other health benefits include improved heart performance, nervous system and glucose absorption. Sodium is the primary ion and electrolyte within the body, and it is needed for blood regulation. As an electrolyte, it regulates the bodily fluids and transmits electrical impulses in the body. The recommended intake of sodium is 2400 mg/day. If the body is not supplied with enough sodium, the deficiency symptoms can range from irritating to fatal. One of the most seriously impacted areas of the body is the nervous system, which will begin to shut down. In general, its deficiency leads to diarrhea, vomiting, headache, weakness, low blood pressure, lethargy, weight loss, confusion, dizziness and muscular irritability. Hypernatremia, also spelled hypernatraemia, is a high sodium ion level in the blood. Early symptoms may include a strong feeling of thirst, weakness, nausea, and loss of appetite. Severe symptoms include confusion, muscle twitching, and bleeding in or around the brain, and although sodium is an essential nutrient in any balanced diet, it can also cause stomach cancer and hypertension.