Potassium is an electrolyte mineral that helps the body maintain a normal fluid balance, a regular heartbeat and healthy nerve and muscle function. People with chronic kidney disease or those taking certain cardiac medications must limit their intake of dietary potassium. All fruit contains potassium in some capacity, though some types have less than others and are better choices for those who need to limit their potassium intake. The recommended daily fruit intake for those on a low-potassium diet, according to the Cleveland Clinic, is no more than three serving per day, paying careful attention to portion sizes.
Watermelon
Watermelon contains about 155 milligrams of potassium in a 1-cup serving, considerably lower than other high-potassium fruits. Of the melon family, watermelon is the best choice, as cantaloupe and honeydew melons are much higher in potassium. Watermelon is also a good source of vitamin C and vitamin A, helping maintain a healthy immune system.
Berries
Many berries are low in potassium, making them a smart choice for a low-potassium diet. Blueberries, strawberries, blackberries, raspberries and cranberries each contain 155 milligrams of potassium in a 1/2-cup serving. Berries, like blueberries and blackberries, are also good sources of antioxidants due to the natural dark purple coloring in their skin.
Fleshy Fruits
Fleshy fruits, like apples, peaches, pears, pineapple, plums and tangerines, are all low in potassium. It’s important to pay attention to portion sizes, as these types of fruits vary widely in size and eating too much of a low-potassium fruit could still add up to excess dietary potassium. One medium apple, half a medium-sized peach or pear, 1/2 cup of pineapple or one small plum each contain 155 milligrams of potassium.
Reducing Potassium in Fruits
Fruit is not potassium-free, but soaking or boiling fruit in water can help to leech some of the potassium out. This method can further help fruit to be more diet-friendly if you're limiting potassium intake, potentially enabling you to have a few higher potassium fruits. Always consult your doctor or a dietitian concerning dietary recommendations that affect your health status.
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