Sodium and potassium are closely interconnected but have opposite effects in the body. Both are essential nutrients that play key roles in maintaining physiological balance, and both have been linked to the risk of chronic diseases, especially cardiovascular disease.
High salt intake increases blood pressure, which can lead to heart disease, while high potassium intake can help relax blood vessels and excrete sodium while decreasing blood pressure. Our bodies need far more potassium than sodium each day, but the typical U.S. diet is just the opposite: Americans average about 3,400mg of sodium per day, about 75% of which comes from processed foods, while only getting about 2,900 milligrams of potassium each day.
A study in the Archives of Internal Medicine found that: People who ate high-sodium, low-potassium diets had a higher risk of dying from a heart attack or any cause.
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