As people age, the sensation of thirst decreases, so older adults are
more likely to become dehydrated. This may increase the risk of some
health issues such as heart attack, stroke and urinary tract infections.
To stay adequately hydrated, older adults may need to have set times
or reminders to drink fluids. Special attention is needed during
illnesses. For example, vomiting and diarrhea can quickly cause
dehydration, as can just not feeling well enough to get up and get
something to drink. Certain medications may cause a decrease in body
fluids. Weather also plays a part in fluid loss.