Sodium

Sodium is your primary extracellular electrolyte—key for fluid balance, nerve signaling, blood pressure, and muscular control. It works closely with potassium and hydration status. Low sodium (hyponatremia) is common in athletes, sauna users, and low-salt eaters. High sodium is typically a dehydration or dietary imbalance issue—not just a salt problem. This marker gives insight into stress tolerance, electrolyte strategy, and total hydration load.

Unit

mmol/L