Osmotic thirst
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Osmotic thirst is one of the two main types of thirst, as discussed by in the . This type of thirst occurs when there is a high concentration of solutes, like salt, in the bloodstream. When you consume something salty, such as salty snacks, it leads to an increased level of sodium. This higher salt concentration boosts osmolarity, activating neurons in the OVLT (organum vasculosum of the lateral terminalis) of the brain. These neurons then signal other areas in the brain, which initiate a series of responses culminating in the release of hormones that make you feel thirsty. The primary role of this mechanism is to maintain fluid balance and ensure that the blood maintains a certain osmotic pressure, promoting proper cellular function and overall homeostasis 1.
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