Foods low in both potassium and phosphorus include white rice, white bread, most berries, apples, cabbage, cauliflower, egg whites, and unsweetened rice milk. These are staples of a kidney-friendly diet, where the general targets are less than 200 mg of potassium and less than 100 mg of phosphorus per serving. If you have chronic kidney disease, your daily phosphorus goal is typically under 800 mg, and your potassium target ranges from 2,000 to 3,000 mg depending on disease stage.
Knowing which foods fall safely within those limits, and which sneaky ingredients push them higher, makes grocery shopping and meal planning far more manageable. Here’s a practical breakdown by food group.
Fruits That Fit Both Limits
Most fresh and canned fruits are naturally low in phosphorus, so potassium is the main number to watch. The following fruits are considered low-potassium choices at the serving sizes listed, according to the National Kidney Foundation:
- Apples: 1 medium
- Blueberries: ½ cup
- Strawberries: ½ cup
- Raspberries: ½ cup
- Blackberries: ½ cup
- Cranberries: ½ cup
- Grapes: ½ cup
- Cherries: ½ cup
- Pineapple: ½ cup
- Pears: 1 small fresh or ½ cup canned
- Peaches: 1 small fresh or ½ cup canned
- Plums: 1 whole
- Tangerines: 1 whole
- Watermelon: limit to 1 cup
Serving size matters more than you might expect. A half cup of blueberries is low-potassium, but a full bowl of them may not be. Aim for two to three servings of low-potassium fruit per day. If you’re buying canned fruit, drain the liquid first, since potassium leaches into the syrup or juice.
Vegetables With the Lowest Numbers
Like fruit, most vegetables are naturally low in phosphorus, so potassium is again the deciding factor. These vegetables are safe at roughly ½-cup cooked servings:
- Green cabbage and red cabbage
- Cauliflower
- Green beans or wax beans
- Cucumber
- Eggplant
- Peppers (any color)
- Onions
- Radishes
- Yellow squash and zucchini
- Cooked carrots
- Asparagus: 6 spears
- Celery: 1 stalk
- Raw white mushrooms
- Canned water chestnuts
- Kale: ½ cup
- Broccoli (raw or cooked from frozen): ½ cup
High-potassium vegetables to limit or avoid include potatoes, tomatoes, spinach, sweet potatoes, and winter squash like butternut. If you want to include potatoes occasionally, cutting them into small cubes and boiling them can reduce potassium content by about 50%. Shredding them first and then boiling can cut potassium by as much as 75%. Simply soaking without boiling does not remove a meaningful amount.
Best Grains and Starches
Refined grains are your best option here because processing strips away much of the potassium and phosphorus found in the outer bran layer. A half cup of white rice contains about 41 mg of phosphorus and 31 mg of potassium. The same amount of brown rice has roughly double the phosphorus (81 mg) and slightly more potassium (42 mg). White bread, regular pasta, and unsalted crackers made from white flour follow the same pattern.
There is a helpful biological quirk with plant-based phosphorus: your body absorbs less than 50% of the phosphorus in grains, beans, and nuts. So even when a whole grain shows a higher number on a label, the actual amount your body takes in is lower than the label suggests. That said, if your kidney function is significantly reduced, the safer bet is still refined grains where the numbers start lower to begin with.
Protein Sources to Prioritize
Protein and phosphorus tend to travel together, which makes choosing the right protein sources essential. Animal proteins like chicken, turkey, and fish contain roughly 125 to 273 mg of phosphorus per 100 grams, and nearly all of that phosphorus is absorbed by your body. Processed meats like bacon and sausage fall in a similar range (122 to 237 mg per 100 grams) but often contain phosphorus additives that push the real number higher.
Egg whites are one of the best options. They’re high in protein but contain very little phosphorus or potassium compared to whole eggs (the yolk carries most of the phosphorus). For meat, small portions of fresh chicken breast, turkey, or white fish are reasonable choices. The key is portion control: keeping servings to about 2 to 3 ounces at a meal helps keep phosphorus manageable.
Dairy is where things get tricky. Cheese and yogurt range from 105 to over 1,200 mg of phosphorus per 100 grams, and milk is high in both potassium and phosphorus. If you enjoy dairy, small portions of cream cheese or cottage cheese tend to be lower than hard cheeses like cheddar or parmesan.
Milk Alternatives Worth Trying
Not all plant milks are equal for kidney health. Rice milk stands out as one of the best options, with only about 65 mg of potassium per cup and generally low phosphorus. Coconut milk also compares favorably, with the lowest potassium, sodium, and oxalate levels among common plant milks.
Almond milk (original, unsweetened) measured essentially 0 mg of potassium per cup in one analysis, though brands vary. Soy milk and oat milk are higher, at around 380 to 390 mg of potassium per cup, which puts them closer to dairy milk territory. If you’re watching potassium closely, rice milk or coconut milk are the safer picks. Always check labels for phosphorus additives, which are common in fortified plant milks.
Watch for Hidden Phosphorus in Packaged Foods
The phosphorus that occurs naturally in whole foods is only partially absorbed by your body. Phosphorus additives in processed foods are a different story. They’re inorganic, and your body absorbs them almost completely. This makes processed and packaged foods one of the biggest hidden sources of excess phosphorus.
Phosphorus additives show up in fast food, deli meats, frozen meals, bottled beverages, and even some breads and cereals. On ingredient lists, look for any word containing “phos”: sodium phosphate, phosphoric acid, calcium phosphate, dicalcium phosphate. European-style labels use E-numbers in the 338 to 343 range, 450 to 452 range, and several others. If you see “mineral salts” listed without specifics, those often contain phosphate compounds too.
A practical rule: the fewer ingredients on the label, the less likely you’ll encounter phosphorus additives. Fresh or frozen whole foods are almost always safer than their processed equivalents.
Seasonings and Condiments
One important warning: avoid salt substitutes. Most replace sodium chloride with potassium chloride, which can be more dangerous for people with kidney disease than the salt they’re trying to replace. Always check the label of any “lite salt” or “salt-free” seasoning blend for potassium chloride.
Safe flavor options are plentiful. Fresh garlic, onion powder (not onion salt), lemon or lime juice, pepper, paprika, and vinegar all add flavor without meaningful potassium or phosphorus. Dried herbs like basil, rosemary, thyme, dill, and tarragon are naturally low in both minerals. Many salt-free seasoning blends, like Mrs. Dash, are specifically designed without potassium chloride. Italian seasoning, lemon pepper, and various spice rubs (Cajun, fajita, Thai, Chinese five spice) are also good choices when they’re salt-free versions.
Putting a Day of Eating Together
A typical kidney-friendly day might look like this: scrambled egg whites with sautéed peppers and onions for breakfast, served with white toast. A lunch of grilled chicken breast (small portion) on white rice with steamed green beans, seasoned with garlic and lemon juice. A snack of fresh strawberries or a small apple. Dinner of baked fish with roasted cauliflower and cabbage, with a glass of rice milk.
The pattern is consistent: refined grains over whole grains, fresh or frozen produce over canned or processed, small protein portions, plant milks over dairy, and herbs and citrus instead of salt or salt substitutes. Keeping individual servings within the low-mineral thresholds (under 200 mg potassium and under 100 mg phosphorus per serving) while staying within your daily limits is more manageable than it sounds once you get familiar with the safe foods. Most people find that after a few weeks, choosing the right items becomes second nature.