They found that even mild dehydration can diminish a person's ability to pay attention ... "We chose to study middle-aged and ...

Anyone can become dehydrated, however, those at higher risk are infants, children and older people. Infants cannot and children often do not communicate when they are thirsty, making them more ...

it can lead to dehydration, another cause of heatstroke. Severe heatstroke is particularly dangerous for the elderly, and can often lead to death. Most people can tell when the temperature rises.

Dehydration occurs when the body loses more fluids than it takes inthrowing off its balance and potentially, leading to serious health complications if left untreated.