Story at-a-glance New data from the largest clinical trial on this topic shows no improvement in symptoms, hospitalizations, or survival with fluid restriction in chronic heart failure patients Patients who drank more than the advised limit of 1,500 ml had no higher risk of death, hospitalization, kidney injury, or emergency interventions Fluid-restricted patients reported much higher thirst distress, which contributes to stress hormone release, reduced treatment compliance, and increased emotional strain Over-restricting both water and salt leads to dangerously low sodium levels, while getting enough potassium helps your kidneys manage hydration and prevent harmful fluid buildup Researchers recommend giving fluid goals based on your symptoms, medications, and how you feel — this allows you more control and fewer restrictions