During times of acute fear, many people report a salty taste in their mouths. Research indicates that stressful situations stimulate not only cortisol but aldosterone, another adrenal hormone that causes the body to reabsorb sodium and water, leading to higher blood volume and pressure. Along with arginine vasopressin, an antidiuretic hormone, and renin, a kidney enzyme that plays a role in blood pressure regulation, this increase may lead to increased sodium retention.

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