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How Much Potassium Should You Take to Lower Blood Pressure?

by
author image Nancy Clarke
Nancy Clarke began writing in 1988 after achieving her Bachelor of Arts in English and has edited books on medicine, diet, senior care and other health topics. Her related affiliations include work for the American Medical Association and Oregon Health Plan.
How Much Potassium Should You Take to Lower Blood Pressure?
Beans are a good source of potassium to help regulate blood pressure. Photo Credit View Stock/View Stock/Getty Images

If your blood pressure is higher than normal, a mineral imbalance in your diet may be at least partially responsible. Most Americans consume improper amounts of the potassium and sodium that regulate the force exerted on the walls of your arteries by blood pumped from the heart. Simply taking a pill might not offset dietary problems that affect blood pressure. Changes in your potassium level can be dangerous, especially if you have kidney disease. To lower your blood pressure, use the safe parameters of your diet to get the right amount of minerals from foods.

Daily Values of Potassium

According to the National Institutes of Health, only 5 percent of Americans get the full 4,700 mg of potassium per day recommended for good health. In addition to controlling blood pressure and heart rhythm, your body uses potassium to form new cells and extract energy from carbohydrates. The amount of dietary potassium used to curb your blood pressure changes from day to day and meal to meal, based on your sodium intake and your particular metabolism. While no one can say how much potassium will lower your blood pressure, achieving the recommended daily value will put you in the correct range to offset average sodium intakes.

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Potassium-Sodium Interaction

Focusing on potassium alone ignores the greater influence of sodium on blood pressure, which is correlative. The more sodium you take in -- mainly from the salt added to foods -- the higher your blood pressure. Without enough potassium in your body to temper this action, high blood pressure can become chronic and raise your risk for potentially fatal heart disease. Because of potassium’s interaction with sodium blood levels, taking a potassium supplement without reducing your sodium intake won’t improve blood pressure. For this reason, the American Heart Association advises getting potassium food and letting your doctor prescribe any necessary mineral supplements and medications.

Food Sources

Drinking low-fat milk daily will help you achieve your calcium as well as potassium requirements. Meats and fish contain potassium, but plant-based foods have fewer detrimental health effects. Cooked dry beans have the greatest potassium concentration of all foods, with little of the sodium or saturated fat and none of the cholesterol that can harm your cardiovascular system. Cooked leafy greens, dried fruits, potatoes, sweet potatoes, papayas and many fruits are good sources of potassium.

Considerations

As you choose potassium food sources, limit the sodium elements that negatively affect blood pressure. Rinse canned fish and beans to remove salt, and choose healthy preparation methods that limit salt. For example, avoid breaded and fried foods, pickled foods and cured meats. Limit potassium-rich fast foods such as tacos, hamburgers and french fries, which are high in sodium.

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