Ian del Conde Pozzi and Christopher Davis say dehydration can trigger compensatory hormone responses that may raise blood pressure, while routine checks should prompt medical review at 130/80 mm Hg or higher.
They say hydration helps indirectly rather than directly lowering blood pressure, and cite studies linking lower body water or low plain-water intake with higher hypertension risk, though stronger evidence is still needed.
They also recommend exercise, weight control, less sodium and alcohol, stress management and the DASH diet, while hibiscus tea, beet juice, pomegranate juice, green tea and low-fat milk may support heart health.
Can simply drinking more water significantly lower your blood pressure if you don’t change your diet or exercise habits?
Could focusing too much on sodium reduction or functional beverages have hidden risks for certain people with other health conditions?
Are new wearable blood pressure monitors as accurate and reliable as traditional arm cuffs for home use?