The human body does not digest water. While water is essential for life and various bodily functions, it does not undergo the same digestive process as food. Here's a breakdown of what happens to water in the human body:

1. Ingestion: When you drink water, it enters your mouth and then passes down the esophagus into your stomach.

2. Absorption: The stomach and intestines are responsible for absorbing nutrients and water from ingested substances. However, water is absorbed primarily through the walls of the small intestines.

3. Distribution: Once absorbed, water enters the bloodstream and circulates throughout the body. It helps hydrate cells, tissues, organs, and systems, facilitating various physiological processes.

4. Filtration: The kidneys play a crucial role in regulating water balance in the body. They filter the bloodstream and retain water when necessary or excrete excess water as urine.

5. Excretion: When the body has more water than it needs or has consumed excessive amounts of salt or other substances that require more water for dilution, the kidneys excrete the excess water through urine.

Therefore, while water is indispensable for the body's proper functioning, it is not considered a nutrient that undergoes digestion in the same way that carbohydrates, proteins, and fats do.