Dehydration in elderly is not uncommon.
In the elderly, the receptors (osmoreceptors, baroreceptors and opioid receptors) responsible for the regulation of thirst are not as effective as in young people. With age these receptors may become defective or undergo some changes resulting in a decrease in thirst response. (3)
This leads to
Common symptoms of dehydration in increasing order of severity are: increased thirst, vague discomfort, decreased appetite, dry mouth, loss of concentration, headaches, sleepiness, tingling sensation and numbness of hands and feet and possibility of collapse.
It is, therefore, advisable to get the elderly to learn to drink water regularly even if they are not thirsty, in order to avoid dehydration. (4)
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NUTRITION FACTS VS NUTRITION MYTHS
You will find a summary of the most common nutrition myths and evidence-based nutrition facts here.