Potassium is a mineral found in many different foods, including whole grains, fruits, vegetables, milk, dried beans, and peas. Potassium helps maintain normal blood pressure and also helps muscles, including the heart, to contract properly.
Your doctor may recommend following a low-potassium diet if you have kidney problems or are taking certain medications. If you have kidney problems, excess potassium can build up to dangerous levels in your blood. This can lead to muscle weakness or irregular heartbeats.
When combined with a low-sodium diet, a diet high in potassium can help lower high blood pressure. This can help lower the risk of stroke and other complications of high blood pressure. However, you should not follow a high-potassium diet without first checking with your doctor.
The following foods contain more than 200 milligrams of potassium per serving and are therefore considered to be high in potassium.
The following foods are considered to be low in potassium. Realize, however, that eating more than one serving of any of these foods can make it a high-potassium food.
American Society for Nutrition
Eat Right—Academy of Nutrition and Dietetics
Dietitians of Canada
The Kidney Foundation of Canada
Hyperkalemia. EBSCO DynaMed Plus website. Available at:http://www.dynamed.com/topics/dmp~AN~T115641/Hyperkalemia. Updated June 13, 2016. Accessed July 20, 2017.
Hypokalemia. EBSCO DynaMed Plus website. Available at:http://www.dynamed.com/topics/dmp~AN~T115951/Hypokalemia. Updated September 17, 2015. Accessed July 20, 2017.
Kidney disease: eating a safe amount of potassium. US Department of Veterans Affairs website. Available at: http://www.veteranshealthlibrary.org/RelatedItems/142,83182_VA. Accessed July 20, 2017.
Kidney disease: High- and moderate-potassium foods. Eat Right—Academy of Nutrition and Dietetics website. Available at:http://www.eatright.org/resource/health/diseases-and-conditions/kidney-disease/kidney-disease-high-and-low-potassium-foods. Updated March 23, 2017. Accessed July 20, 2017.
Potassium and your CKD diet. National Kidney Foundation website. Available at: https://www.kidney.org/atoz/content/potassium. Accessed July 20, 2017.
What is potassium? Eat Right—American Academy of Nutrition and Dietetics website. Available at: http://www.eatright.org/resource/food/vitamins-and-supplements/types-of-vitamins-and-nutrients/potassium. Updated February 3, 2014. Accessed July 20, 2017.
Last reviewed July 2017 by EBSCO Medical Review Board Michael Woods, MD, FAAP Last Updated: 10/21/2013