Which of the following is a potential consequence of untreated dehydration in adults?

Untreated dehydration in adults can lead to several serious complications, and mental confusion is one of the more severe consequences. When the body loses more fluids than it takes in, it can disrupt the balance of electrolytes and impair proper brain function. This condition often leads to cognitive disturbances, including confusion, disorientation, and difficulty concentrating, which can pose significant risks, especially in older adults.

The brain is particularly sensitive to changes in hydration status, and inadequate hydration can cause decreased cerebral perfusion, leading to symptoms like confusion and altered mental status. This reinforces the importance of maintaining adequate fluid intake, especially in populations at risk for dehydration, such as the elderly or those with chronic illnesses.

While factors like decreased energy levels can also result from dehydration, mental confusion represents a more acute and critical sign that immediate intervention is necessary. Improved skin elasticity is typically associated with proper hydration and does not occur in the context of dehydration, and weight gain is generally not a direct consequence of dehydration.