Increased potassium intake reduced blood pressure in people with hypertension (systolic −3.49 mmHg, diastolic −1.96 mmHg); associated with 24% lower risk of stroke (RR 0.76, 95% CI 0.66–0.89) with no adverse effect on blood lipids or renal function.

Potassium is actively redistributed between skeletal muscle and plasma during high-intensity exercise; severe reduction of the trans-sarcolemmal K+ gradient contributes to muscle and whole-body fatigue. Maintaining adequate potassium status supports normal neuromuscular function and exercise capacity.