can dehydration cause allergies
For example, dehydration triggers the release of histamine. Histamine's function here is to regulate the. thirst mechanism and conserve and ration available water in the body according to a priority of function. Elevated. histamine can lead to allergies. Allergies are a symptom of chronic dehydration. When you are dehydrated and histamine levels are elevated, your body. releases a stress hormone called cortisol. This suppresses the production of white blood cells and you become more. vulnerable to all kinds of allergens.