Sodium\Potassium Ratio

A 15 year study showed:
Higher sodium intake was associated with an increase in mortality from all causes.
Higher potassium intake was associated with a lower mortality risk: people with the highest potassium intake had a 61% lower risk of dying from all types of cardiovascular disease and a 74% lower chance of dying from ischemic heart disease (heart disease caused by impaired blood flow, usually a result of atherosclerosis) compared with people with the lowest intake.
Having higher sodium-to-potassium ratios significantly increased the risk of mortality from heart disease. For ischemic heart disease, the risk was more than two times greater among people with the highest sodium-to-potassium ratio than in those with the lowest ratio.