Fruits that are low in potassium include blackberries, blueberries, cherries, cranberries and grapes. Some other fruits that are low in potassium are mandarin oranges, pineapples, raspberries, strawberries and tangerines.
Some fruits are safe to eat on a low-potassium diet as long as only a specific amount is consumed. A small peach, a small pear and a medium-sized apple are all low-potassium fruit options. Half of a grapefruit or 1 cup of watermelon are also low in potassium. Eating more than one portion of a low-potassium food can cause the serving to be classified as high potassium. A portion is typically 1/2 cup in most cases, unless specified otherwise.
People who have kidney disease are often required to limit the amount of potassium in their diet. For these people, high levels of potassium can cause weakness, numbness and tingling. High potassium levels can also cause irregular heartbeats and lead to a heart attack.
People who have no dietary restrictions typically require approximately 3,500 to 4,500 milligrams of potassium per day. Those on a restricted or low-potassium diet should consume approximately 2,000 milligrams per day, unless otherwise directed by their doctors or dietitians. Fruits high in potassium include bananas, oranges and raisins.