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A low-potassium diet may reduce the burden on the kidneys and keep potassium levels in check. Low-potassium foods can help a person lower their potassium levels. Examples include fruits, vegetables, and lean protein sources. Potassium is a mineral found in a variety of foods, and it plays many important roles in the body, including keeping fluid levels balanced.

The kidneys help filter fluids and excess waste products from the blood. In doing so, they balance out blood potassium and electrolyte levels. However, some health conditions may limit the kidneys from functioning properly. This could lead to high levels of potassium, which may cause complications. This article looks at why and for whom monitoring dietary potassium is important. It also explores which foods to eat, which to avoid, and how to prepare foods so that they contain less of the mineral.

Blood potassium levels that are too high or low may lead to serious complications, such as heart disease or cardiac arrest. This may impair the muscles that control the heartbeat and breathing, and could lead to:. Hypokalemia is when blood potassium levels are too low. This may cause symptoms like:. Potassium also interacts with sodium.

Without enough potassium in the body, high sodium levels may lead to an increase in blood pressure. However, it is important to keep in mind that the nutrient is crucial for health. The goal is to choose foods that provide enough of the mineral without causing a problematic buildup. Many potassium-restricted diets limit potassium to milligrams mg each day. Low-potassium foods contain about mg or less of the mineral per serving.

Having a larger serving increases the potassium content of a meal. Beyond vegetable sources, other low-potassium sources of protein include:. Low-potassium foods that are rich in carbohydrates include:.

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In fact, people in the United States consume too little potassium in their diets. If a healthy person consumes too much, their kidneys typically excrete the excess through the urine. That said, kidney impairment, such as chronic kidney disease , may cause hyperkalemia. Other causes for high blood potassium levels may include:.

A person with any of these health issues should work with a healthcare professional to keep their potassium levels in check.

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A doctor may also recommend medication to help remove the mineral from the body, such as diuretics or potassium binders. High-potassium foods contain more than mg of potassium per serving. Some legumes, beans , and seeds also contain more potassium, including:. People looking to limit their potassium levels may also need to avoid salt substitutes, which may contain higher levels of potassium.

A person should contact a doctor about the best approach and how much to leach before trying it at home. For canned or potted fruits and vegetables, drain and rinse them to remove any excess minerals in the canning liquid. A person with a health issue affecting their kidneys or adrenal system may need to prevent this mineral from building up and must closely monitor their potassium intake.

A doctor may recommend a low-potassium diet. It is important to work with them closely to monitor potassium levels and keep them in check. Potassium is a nutrient that is key to good heart health. In this article, learn about the best high potassium foods that people can eat. People with chronic kidney disease need to avoid eating potassium-rich foods.

In this article, learn which high-potassium foods to avoid with kidney…. The glycemic index GI ranks foods based on how their carbohydrates affect blood glucose levels. In this article, we look at some of the best low-GI…. Having too much or too little potassium can result in complications that affect the kidneys. Various conditions can cause potassium levels to become….

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Is intermittent fasting actually bad for your heart? Newsletters Sign Up. Follow Us. The best foods to help lower potassium levels. Potassium levels Low potassium foods Tracking potassium levels Foods to avoid Leaching potassium Summary A low-potassium diet may reduce the burden on the kidneys and keep potassium levels in check.

Why potassium levels matter. Low potassium foods. Serving sizes Low-potassium foods contain about mg or less of the mineral per serving.

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Tracking potassium levels. Foods to limit or avoid. Leaching potassium from food. Leaching potassium Leaching potassium from vegetables may look like this: Peel and rinse the vegetables under warm water. Soak them in warm water for at least 2 hours. Use 10 times as much water as there are vegetables. Rinse them under warm water again.

Boil them, using 5 times as much water as there are vegetables. How we reviewed this article: Sources. Medical News Today has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity.

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Related Coverage. Top 13 high potassium foods. High-potassium foods and kidney disease. Medically reviewed by Kathy W. What are the best low-glycemic foods? What to know about potassium levels and kidney disease. Medically reviewed by Grant Tinsley, Ph. Vegetarian diets can protect against diabetes, cardiovascular diseases Vegan and vegetarian diets can help keep type 2 diabetes and cardiovascular diseases at bay, two new scientific reviews show.