Understanding High Sodium Levels High sodium levels in the electrolytes, also known as hypernatremia, occur when there’s an abnormal increase in the concentration of sodium ions within the body. This condition can stem from various factors: Dehydration or excessive fluid loss is one common cause. In hot environments or after intense exercise, individuals may lose a significant amount of fluid through sweating. If fluid intake is not replenished promptly, the blood can become concentrated, leading to an increase in blood sodium levels. Kidney disorders are another significant factor. When the kidneys are not functioning properly or are in a state... Learn more