The Body’s Fluid Balance

Neither too little nor too much

In patients who have undergone surgery, we carefully monitor the amount of fluid given and leaving the body during each visit. The balance between what a person takes in and what is excreted is essential for the body’s proper function.

The average daily fluid requirement for an adult is around 2 to 2.5 liters. This amount varies depending on individual conditions. On hot days or with increased sweating, the need rises; conversely, in cooler conditions with minimal loss, it can be slightly reduced.

The body needs water to carry out all its chemical processes. From eliminating waste products to ensuring proper tissue perfusion and maintaining metabolism — water is indispensable.

However, excess water can also be harmful. When daily intake rises to 4–5 liters, it may lead to what we call water intoxication or water toxicity. In such cases, many substances in the blood, especially electrolytes, become diluted. Their concentration decreases, impairing cellular function and disrupting the body’s balance.

Balance is the key once again. Water is the essence of life — but even life’s source can overflow when taken to excess.