ADH is closely related to electrolyte balance, as it helps regulate the concentration of electrolytes in the blood, such as sodium. In conditions like SIADH, where ADH levels are elevated, it can lead to dilutional hyponatremia, a decrease in blood sodium levels. Conversely, diabetes insipidus can lead to hypernatremia, an increase in blood sodium levels due to excessive water loss. Maintaining the right balance of electrolytes is essential for overall health.