Hyponatremia is a deficiency of sodium in the body. Sodium, as one of the four critical electrolytes along with potassium, calcium, and magnesium, is responsible for keeping the muscles and nervous system of the human body in balance. An electrolyte is a mineral that allows the conduction of electrical impulses through the body. The condition of hyponatremia has several potential causes and its symptoms can range from mild to potentially fatal.
Information. Hyponatremia affects the water-salt balance in the body. The human body, as with other organisms, requires a certain ratio of water to electrolytes to function properly. Too much or too little water negatively affects homeostasis. The level of sodium in the blood, in order to avoid hyponatremia or hypernatremia, has to be between 135 and 145 milliequivalents per liter. To be officially diagnosed with a sodium imbalance, a blood test from a doctor or at home is necessary.