Why are older adults at higher risk of dehydration?

Older adults are at a higher risk of dehydration primarily due to decreased thirst sensation. As people age, multiple physiological changes occur that can affect the body’s hydration status. One significant change is a reduction in the sensitivity of the thirst mechanism. This means that older adults may not feel thirsty even when their bodies are in need of fluids. Consequently, they might not consume enough water throughout the day, leading to a higher likelihood of dehydration.

In addition, the aging process can affect kidney function, making it more difficult for the body to retain fluids and concentrate urine. These factors combined make it crucial for older adults to be mindful of their fluid intake, even when they do not experience typical thirst cues. Understanding this physiological decline helps caregivers and healthcare providers to better support the hydration needs of the elderly population.