Thirst

Thirst is the basic human sensation of needing to drink fluids. It is an essential mechanism involved in fluid balance. It arises from a lack of fluids or an increase in the concentration of certain osmolites, such as salt. If the water volume of the body falls below a certain threshold or the osmolite concentration becomes too high, the brain signals thirst.

Mechanism[edit | edit source]

The feeling of thirst occurs in response to the body's need for water. When the body is dehydrated, the brain sends signals to the salivary glands to reduce saliva production, resulting in a dry mouth. The brain also triggers the release of vasopressin, a hormone that constricts blood vessels and reduces urine output, conserving water in the body.

Causes[edit | edit source]

Thirst can be caused by dehydration, diabetes, certain medications, and excessive sweating. It can also be a symptom of serious conditions like heart, liver, or kidney disease.

Treatment[edit | edit source]

The primary treatment for thirst is to drink fluids, preferably water. In cases where thirst is a symptom of a disease, treating the underlying disease will often alleviate the thirst.

See also[edit | edit source]

Thirst Resources
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