What is Body Dehydration? Your body becomes dehydrated because it lacks the water and other fluids it requires to function normally when you use or lose more fluid than you take in. Dehydration will occur if lost fluids are not replaced. Dehydration can affect everyone, but it is particularly dangerous for small children and elderly people. Causes of dehydration Dehydration in young children is most frequently brought on by severe diarrhoea and vomiting. Older people naturally have less water in their systems, and they may have diseases or take medications that make them more susceptible to becoming dehydrated. This means that even relatively small ailments, such as lung or bladder infections, can cause elderly people to become dehydrated. If you don’t drink enough water in hot weather, especially if you are moving hard, dehydration can occur in people of any age. More fluids can usually help you recover from mild to moderate dehydration, but severe dehydration requires rapid medical attention.
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