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35 Foods to Avoid With Kidney Disease

Supplements

Supplements

According to kidney.com, there are few studies to show if herbal supplements have any real benefits—and even fewer studies have been conducted on their effects on kidney patients. 

As with any over-the-counter medication you plan on taking, always consult your physician to ensure it is right for you.

Dried Beans and Lentils

Dried Beans and Lentils

Both of these can be high in phosphorus, so for a healthier lifestyle and to baby your kidneys, we suggest attempting to substitute them with tofu, sourgum, cauliflower florets, tempeh, mushrooms, or eggplant.

Cooking dried beans and lentils also requires a bit more effort than just eating them from a can,  making them definitely not worth it! 

Seeds

Seeds

These are also likely to be high in phosphorus and dangerous to the overall function of a diseased kidney. Substituting unsalted popcorn for a snack or dry mustard for a condiment are much better alternatives for your diet.

As delicious as sunflower seeds may be, the salt content alone makes them super rough on your kidneys. 

Nuts and Peanut Butter

Nuts and Peanut Butter

Both of these elements are high in potassium and phosphorus. Although you can substitute two tablespoons of peanut butter for red meat, we suggest that you stay away from it as much as possible. 

A suitable substitution could be macadamia nuts, jams, jellies, or honey. These options have lower sodium content and lack hydrogenated oils. 

Pretzels, Chips, and Crackers

Pretzels, Chips, and Crackers

These items are all high in sodium, and chips made from potatoes will also be high in potassium. 

These snacks are also dangerous because it’s easy to overeat the suggested serving sizes. Try substituting unsalted popcorn and pretzels, corn or tortilla chips, instead.

Dates, Raisins, and Prunes

Dates, Raisins, and Prunes

These are all dried fruits and, therefore, will have a higher potassium concentration than any kidney patient should have. 

One cup of prunes can provide 1,274 mg of potassium, which is five times the normal amount found in their counterpart, the plum.

Leafy Green Vegetables

Leafy Green Vegetables

Including but not limited to: swiss chard, beet greens, collard greens, pumpkin, winter squash, and kale. These items all contain high amounts of potassium and should be avoided whenever possible—especially cooked. 

Half a cup of leafy green vegetables when cooked reduce to about one tablespoon. Eating half a cup of cooked greens will raise the potassium levels exponentially.

Premade Meals

Premade Meals

On a regular diet, you might be okay with a sodium intake of 2,000 milligrams per day. However, on a kidney disease-based diet you would need to consult with your physician to find a healthy number based on your specific case. 

Regardless, premade meals such as soups, frozen dinners, fast foods, and other premade meals are extremely high in sodium. Rely instead on the regular homemade variety of meals so you can monitor your sodium intake.

Tomatoes

Tomatoes

Tomatoes are naturally high in potassium, so trying to avoid these is important. Try to find an alternative to tomato sauce in recipes such as red pepper sauce. 

As a substitute for fresh tomatoes, try instead onions, bell peppers, mushrooms, or garlic, as these lack the potassium concentration of tomatoes.

Potatoes

Potatoes

Potatoes are another vegetable that’s high in potassium. Avoid baked potatoes and French fries, as these are too high in potassium no matter what. 

However, you can have mashed potatoes or hash browns if you soak your potatoes in water first for up to four hours, which reduces the amount of potassium.

Oranges and Orange Juice

Oranges and Orange Juice

We already know that oranges and pure orange juice have tons of potassium. There is more potassium in one 8 oz glass of orange juice than in one large orange.

Instead of orange juice, why not try some cranberry juice—which is great for your kidney health!

Bananas

Bananas

This one is probably not much of a surprise, given what we've said about potassium already. Bananas are practically synonymous with the word potassium! 

Bananas, as well as cantaloupe, honeydew, grapefruit juice, and prune juice all have high concentrations of potassium in them. Healthy alternatives include apples, berries, grapes, peaches and pineapples.

Brown Rice

Brown Rice

Brown rice is a whole grain, and whole grains have a higher potassium and phosphorus content. 

For a substitution, try grits, white or wild rice, bulgar, buckwheat, pearled barley, couscous, and white or whole wheat pasta or macaroni.

Whole Wheat Bread

Whole Wheat Bread

White bread is better for kidney disease patients. The more bran and whole grains in the bread, the higher the phosphorus and potassium levels.

White bread tastes better anyway, so if you need to eat it instead because your doctor says so - take that as a win!

Pickled Foods, Relishes, and Olives

Pickled Foods, Relishes, and Olives

Large amounts of sodium added during the pickling process make these a certain no-no in a kidney-healthy diet. 

Even the reduced-sodium varieties contain more sodium than a diseased kidney should contend with. It’s better to stay away from these foods altogether to promote healthy kidney filtration.

Specific Cereals

Specific Cereals

Of course, if whole grains are unhealthy for a diseased kidney, it stands to reason that cereals high in bran, wheat, oatmeal, and granola might also be unhealthy. 

Especially with the added calcium in dairy products. Choose instead a nice warm bowl of grits or cornmeal.

Yams

Yams

These bad boys are chock-full of potassium. One baked yam can contain up to 541 milligrams of potassium. 

The double-cook method, also known as potassium leaching, can help a little. This involves soaking your yams, the same as potatoes, in water for up to four hours to reduce potassium levels.

Apricots

Apricots

Apricots and any other typical dried fruit is just too high in potassium to be healthy for a diseased kidney. 

If one cup of fresh apricots equals 427 milligrams of potassium, dried apricots equals 1,500 milligrams. Try to stick to the list of healthy fruits mentioned in number 12 of this list.

Dairy Products

Dairy Products

Dairy products have very high amounts of potassium, calcium (which contains phosphorus), and proteins, which means that for a person with a kidney disease these items must be avoided as much as possible.

Try to substitute with unenriched rice milk, non dairy creamers, and sour cream without phosphate additives.

Avocados

Avocados

Avocados are a super-rich source of potassium. We wish we had some tasty alternatives to list here, but nothing can replace avocados in our hearts!

If you love guacamole, however, and are in dire need of a replacement, you can find some dips that use foods like edamame as a replacement. 

High-Sodium Condiments

High-Sodium Condiments

Condiments such as ketchup, teriyaki, and soy sauce have really high sodium counts. Instead, try dry mustard, homemade dressings, or marinades for a flavor boost.

When it comes to soy sauce, you may also consider some of the low-sodium options out there. 

Canned Foods

Canned Foods

This includes soups, fruits, and vegetables. They are all high in sodium (yes, even the fruits). Look instead for no-salt-added vegetables, a one-cup serving of low-sodium canned soups, or substitute with homemade soups, homemade casseroles, and fresh (or raw) veggies.

Look instead for no-salt-added vegetables, a one-cup serving of low-sodium canned soups, or substitute with homemade soups, homemade casseroles, and fresh (or raw) veggies.

Red Meats

Red Meats

Although the recommended amounts of protein depend on the percentage of kidney function, it’s best to keep a close watch on your protein intake. 

Therefore, reduce the amount of red meats in your diet plan by substituting cooked chicken or fish, soy, tofu, or two tablespoons of peanut butter.

Processed Meats

Processed Meats

Processed meats such as ham, bacon, sausage, deli meats, chicken tenders or nuggets are high in sodium. And yes, that also includes bologna, pepperoni, salami, and just about every other salty meat you can think of. 

Instead, try to incorporate low-sodium tuna, canned salmon, rotisserie chicken, hummus, and egg salad.

Dark-Colored Sodas

Dark-Colored Sodas

These sugary drinks are loaded with phosphorus. Along with dark-colored sodas, you may also need to avoid certain lemonades, fruit-flavored waters, iced teas, and sugared juice-like drinks with 0% actual fruit. 

In addition, artificial sweeteners in diet sodas can increase kidney decline with a minimum of two diet drinks per day. Try flavored seltzer water instead or as much regular water as possible.

Microwave Popcorn

Microwave Popcorn

Microwave popcorn might be a fast and delicious snack, but it can also work pretty fast in damaging your kidneys. 

Not only is microwave popcorn high in sodium, it also has a lot of trans fats, which can put undue stress on your kidneys.

Shortening

Shortening

Many shortenings contain trans fats, which are artificial fats created through a process called hydrogenation. Trans fats have been associated with various health issues, including cardiovascular problems and inflammation.

Individuals with kidney disease are often advised to manage cardiovascular risk factors, making it important to limit the intake of trans fats.

Commercial Baked Goods

Commercial Baked Goods

Commercially baked foods, like Little Debbie and Hostess snacks, are foods that are also high in trans fats, which in turn makes them tough on your kidneys and your heart. Even certain breads and doughnuts sold commercially may be loaded with trans fats. Always read the labels!

Eat foods like these in moderation or preferably not at all. Nothing good can come from it, and fresh, homemade bread is better anyway.

Pre-Made Refrigerated Dough

Pre-Made Refrigerated Dough

Commercially made, refrigerated dough, like Pillsbury, has a few things going against it. Not only is it processed and fairly high in sodium, but it also usually contains trans fats.

On top of that, depending on the item, it may contain ingredients that are high in potassium.

Margarine

Margarine

Margarine is perhaps one of the worst foods you can eat regarding trans fats. While there is a common misconception that margarine is a healthy alternative to butter, it’s quite the opposite.

Margarine is higher in trans fats than butter, so it would be better to have the real thing – in moderation. And let’s face it: margarine isn’t even good, so why bother having it at all?

Non-Dairy Coffee Creamer

Non-Dairy Coffee Creamer

Some non-dairy creamers, especially those that are powdered or liquid, may contain partially hydrogenated oils, which are a source of trans fats. That makes many non-dairy creamers problematic for those with kidney disease.

While you might be cutting back on sugar with these creamers, you might also want to look out for trans fats.

Candy

Candy

Many candies are highly processed and may contain artificial colors, flavors, and other additives.

A diet rich in whole, unprocessed foods is generally recommended for people with kidney disease, ensuring they receive essential nutrients without the potential negative effects of additives.

Alcohol

Alcohol

While a drink now and then won’t kill you per se, it's best to limit your intake as much as possible. Because alcohol is a diuretic, it increases urine production, which can lead to dehydration.

Dehydration can put a strain on your kidneys, which can be problematic if you have kidney disease.

Caffeinated Drinks

Caffeinated Drinks

Like alcohol, caffeinated drinks like coffee, tea, energy drinks, and sodas are diuretics, so they make you pee more. Thus, if you drink them a lot, you’ll be much more likely to become dehydrated, which will be tough on your kidneys.

That’s made exponentially worse if you are already suffering from kidney disease.

Pizza

Pizza

Pizza really has a lot going against it. For one, it contains tomatoes, which are high in potassium. It also has cheese and dairy products, and depending on what you like on your pizza, you may also be throwing some processed meats on there.

On top of all that, it’s incredibly salty, too. Basically, pizza has all the ingredients to wreck your kidneys, so it’s best to avoid it.