What condition can result from chronic dehydration?

Chronic dehydration can lead to kidney stone formation due to the increased concentration of minerals in the urine. When the body is not adequately hydrated, urine volume decreases, resulting in a higher concentration of substances such as calcium, oxalate, and uric acid. These substances can crystallize and form stones in the kidneys.

The kidneys' inability to dilute these minerals effectively due to low water intake means that the risk of stones forming becomes significantly higher. This is particularly true for calcium oxalate stones, which are the most common type. Therefore, hydration plays a crucial role in preventing kidney stones, emphasizing the importance of adequate fluid intake for kidney health.

In contrast, the other options such as improved digestion, reduced cholesterol levels, and increased immunity do not have a direct relationship with chronic dehydration. In fact, dehydration can impair digestion, potentially lead to higher cholesterol levels due to altered metabolism, and weaken the immune response, making the consideration of hydration even more critical.