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Most people can tolerate a 3-4% decrease in total body water without difficulty or adverse health effects. A 5-8% decrease can cause fatigue and dizziness. Loss of over 10% of total body water can cause physical and mental deterioration, accompanied by severe thirst. Death occurs with a 15 and 25% loss of body water. [4]
In adults over the age of 50 years, the body's thirst sensation reduces and continues diminishing with age, putting this population at increased risk of dehydration. [6] Several studies have demonstrated that elderly persons have lower total water intakes than younger adults, and that women are particularly at risk of too low an intake.
Adipsia, also known as hypodipsia, is a symptom of inappropriately decreased or absent feelings of thirst. [ 1 ] [ 2 ] It involves an increased osmolality or concentration of solute in the urine, which stimulates secretion of antidiuretic hormone (ADH) from the hypothalamus to the kidneys.
The study, which involved 106 peri- and postmenopausal women and was presented at the Endocrine Society’s annual meeting in May, indicates women should self-monitor their vasomotor symptoms and ...
Older adults are prone to dehydration for many reasons. Learn how to identify the symptoms of dehydration in older adults based on how they look and feel.
The underlying mechanism typically involves too little free water in the body. [6] If the onset of hypernatremia was over a few hours, then it can be corrected relatively quickly using intravenous normal saline and 5% dextrose in water. [1] Otherwise, correction should occur slowly with, for those unable to drink water, half-normal saline. [1]
About one-quarter of U.S. adults over age 50 say they expect to never retire and 70% are concerned about prices rising faster than their income, an AARP survey finds. About 1 in 4 have no ...
Signs and symptoms of psychogenic polydipsia include: [3] Excessive thirst and xerostomia, leading to overconsumption of water; Hyponatraemia, causing headache, muscular weakness, twitching, confusion, vomiting, irritability etc., although this is only seen in 20–30% of cases.