Water supplies no calories yet nearly every cell in the human body relies on water to function. Water is important in maintaining appropriate body temperature. It also provides a transport medium so nutrients and oxygen are carried to the cells and waste products are removed. Dehydration is a concern for the elderly population and can result in altered mental status, lethargy and lightheadedness. These symptoms can often be mistaken for other illnesses.
Older adults are at increased risk for dehydration for many reasons.
Physiologically, they face a decreased ability to recognize thirst. Despite the need to consume fluids, one may not seem to feel thirsty. Elderly individuals with loss of bladder control may purposely restrict fluid intake because of fear of urinary incontinence. Others may have decreased access to fluids because of immobility, poor vision or forgetfulness. It may become difficult or bothersome for these individuals to obtain fluids or to get to the bathroom.