What is a common indicator of dehydration?

Loss of weight is a common indicator of dehydration because when the body is not adequately hydrated, it loses fluids, which can lead to a decrease in body weight. This weight loss can occur as the body begins to utilize its water reserves, affecting various physiological functions.

Dehydration leads to decreased hydration levels in the body, often resulting in fluid loss from cells and tissues. As water is expelled, whether through urine or respiratory processes, the overall body mass can drop noticeably. It is crucial for individuals experiencing significant weight loss over a short period to assess their hydration status, as this could lead to negative health consequences if not addressed promptly.

Other options, while potentially indicative of various health conditions, do not serve as primary indicators of dehydration. For instance, puffy skin may indicate fluid retention rather than loss, excessive salivation can be linked to various hydration or health issues, and improved focus is typically associated with adequate hydration, not dehydration.