Which nuts are best for kidneys?

Most nuts are high in phosphorus and not recommended for those following a renal diet. However, macadamia nuts are a delicious option for people with kidney problems. They are much lower in phosphorus than popular nuts like peanuts and almonds.

healthline.com - The 20 Best Foods for People with Kidney Disease - Healthline

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We include products we think are useful for our readers. If you buy through links on this page, we may earn a small commission. Here’s our process. How we vet brands and products Healthline only shows you brands and products that we stand behind. Our team thoroughly researches and evaluates the recommendations we make on our site. To establish that the product manufacturers addressed safety and efficacy standards, we: Evaluate ingredients and composition: Do they have the potential to cause harm?

Do they have the potential to cause harm? Fact-check all health claims: Do they align with the current body of scientific evidence?

Do they align with the current body of scientific evidence? Assess the brand: Does it operate with integrity and adhere to industry best practices? We do the research so you can find trusted products for your health and wellness. Read more about our vetting process. Kidney disease is a common problem affecting about 10% of the world’s population (1). The kidneys are small but powerful bean-shaped organs that perform many important functions. They are responsible for filtering waste products, releasing hormones that regulate blood pressure, balancing fluids in the body, producing urine, and many other essential tasks ( 2 ). There are various ways in which these vital organs can become damaged. Diabetes and high blood pressure are the most common risk factors for kidney disease. However, obesity, smoking, genetics, gender, and age can also increase the risk ( 3 ). Uncontrolled blood sugar and high blood pressure cause damage to blood vessels in the kidneys, reducing their ability to function optimally ( 4 ). When the kidneys aren’t working properly, waste builds up in the blood, including waste products from food ( 5 ). Therefore, it’s necessary for people with kidney disease to follow a special diet. Diet and kidney disease Dietary restrictions vary depending on the level of kidney damage. For example, people in the early stages of kidney disease have different restrictions than those with kidney failure, also known as end-stage renal disease (ESRD) ( 6 , 7 ). If you have kidney disease, your health care provider will determine the best diet for your needs. For most people with advanced kidney disease, it’s important to follow a kidney-friendly diet that helps decrease the amount of waste in the blood. This diet is often referred to as a renal diet. It helps boost kidney function while preventing further damage ( 8 ). While dietary restrictions vary, it’s commonly recommended that all people with kidney disease restrict the following nutrients: Sodium. Sodium is found in many foods

and a major component of table salt. Damaged kidneys can’t filter out

excess sodium, causing its blood levels to rise. It’s often recommended to

limit sodium to less than 2,000 mg per day ( 9 , 10 ). Sodium is found in many foods and a major component of table salt. Damaged kidneys can’t filter out excess sodium, causing its blood levels to rise. It’s often recommended to limit sodium to less than 2,000 mg per day ( , ). Potassium. Potassium plays many critical roles in the body, but those with kidney disease need to limit potassium

to avoid dangerously high blood levels. It’s usually recommended to limit

potassium to less than 2,000 mg per day ( 11 , 12).

Potassium plays many critical roles in the body, but those with kidney disease need to limit potassium to avoid dangerously high blood levels. It’s usually recommended to limit potassium to less than 2,000 mg per day ( , 12). Phosphorus. Damaged kidneys can’t

remove excess phosphorus, a mineral in many foods. High levels can cause

damage to the body, so dietary phosphorus is restricted to less than

800–1,000 mg per day in most patients (13, 14 ). Protein is another nutrient that people with kidney disease may need to limit, as damaged kidneys can’t clear out waste products from protein metabolism. However, those with end-stage renal disease undergoing dialysis, a treatment that filters and cleans the blood, have greater protein needs ( 15 , 16 ). Each person with kidney disease is different, which is why it’s important to talk to your healthcare provider about your individual dietary needs. Luckily, many delicious and healthy options are low in phosphorus, potassium, and sodium. Here are 20 of the best foods for people with kidney disease. 1. Cauliflower Cauliflower is a nutritious vegetable that’s a good source of many nutrients, including vitamin C, vitamin K, and the B vitamin folate. It’s also full of anti-inflammatory compounds like indoles and is an excellent source of fiber ( 17 ). Plus, mashed cauliflower can be used in place of potatoes for a low potassium side dish. One cup (124 grams) of cooked cauliflower contains ( 18 ): sodium: 19 mg

19 mg potassium: 176 mg

176 mg phosphorus: 40 mg

2. Blueberries Blueberries are packed with nutrients and one of the best sources of antioxidants you can eat ( 19 ). In particular, these sweet berries contain antioxidants called anthocyanins, which may protect against heart disease, certain cancers, cognitive decline, and diabetes (20). They also make a fantastic addition to a kidney-friendly diet, as they are low in sodium, phosphorus, and potassium. One cup (148 grams) of fresh blueberries contains ( 21 ): sodium: 1.5 mg

1.5 mg potassium: 114 mg

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114 mg phosphorus: 18 mg

3. Sea bass Sea bass is a high quality protein that contains incredibly healthy fats called omega-3s. Omega-3s help reduce inflammation and may help decrease the risk of cognitive decline, depression, and anxiety ( 22 , 23 , 24 ). While all fish are high in phosphorus, sea bass contains lower amounts than other seafood. However, it’s important to consume small portions to keep your phosphorus levels in check. Three ounces (85 grams) of cooked sea bass contain ( 25 ): sodium: 74 mg

74 mg potassium: 279 mg

279 mg phosphorus: 211 mg

4. Red grapes Red grapes are not only delicious but also deliver a ton of nutrition in a small package. They’re high in vitamin C and contain antioxidants called flavonoids, which have been shown to reduce inflammation ( 26 ). Additionally, red grapes are high in resveratrol, a type of flavonoid that has been shown to benefit heart health and protect against diabetes and cognitive decline ( 27 , 28 ). These sweet fruits are kidney-friendly, with a half cup (75 grams) containing ( 29 ): sodium: 1.5 mg

1.5 mg potassium: 144 mg

144 mg phosphorus: 15 mg

5. Egg whites Although egg yolks are very nutritious, they contain high amounts of phosphorus, making egg whites a better choice for people following a renal diet. Egg whites provide a high quality, kidney-friendly source of protein. Plus, they’re an excellent choice for people undergoing dialysis treatment, who have higher protein needs but need to limit phosphorus. Two large egg whites (66 grams) contain ( 30 ): sodium: 110 mg

110 mg potassium: 108 mg

108 mg phosphorus: 10 mg

6. Garlic People with kidney problems are advised to limit the amount of sodium in their diet, including added salt. Garlic provides a delicious alternative to salt, adding flavor to dishes while providing nutritional benefits. It’s a good source of manganese, vitamin C, and vitamin B6 and contains sulfur compounds that have anti-inflammatory properties. Three cloves (9 grams) of garlic contain ( 31 ): sodium: 1.5 mg

1.5 mg potassium: 36 mg

36 mg phosphorus: 14 mg

7. Buckwheat Many whole grains tend to be high in phosphorus, but buckwheat is a healthy exception. Buckwheat is highly nutritious, providing a good amount of B vitamins, magnesium, iron, and fiber. It’s also a gluten-free grain, making buckwheat a good choice for people with celiac disease or gluten intolerance. A half cup (84 grams) of cooked buckwheat contains ( 32 ): sodium: 3.5 mg

3.5 mg potassium: 74 mg

74 mg phosphorus: 59 mg

8. Olive oil Olive oil is a healthy source of fat and phosphorus-free, making it a great option for people with kidney disease. Frequently, people with advanced kidney disease have trouble keeping weight on, making healthy, high calorie foods like olive oil important. The majority of fat in olive oil is a monounsaturated fat called oleic acid, which has anti-inflammatory properties ( 34 ). What’s more, monounsaturated fats are stable at high temperatures, making olive oil a healthy choice for cooking. One tablespoon (13.5 grams) of olive oil contains ( 35 ): sodium: 0.3 mg

0.3 mg potassium: 0.1 mg

0.1 mg phosphorus: 0 mg

9. Bulgur Bulgur is a whole grain wheat product that makes a terrific, kidney-friendly alternative to other whole grains that are high in phosphorus and potassium. This nutritious grain is a good source of B vitamins, magnesium, iron, and manganese. It’s also an excellent source of plant-based protein and full of dietary fiber, which is important for digestive health. A half-cup (91-gram) serving of bulgur contains ( 36 ): sodium: 4.5 mg

4.5 mg potassium: 62 mg

62 mg phosphorus: 36 mg

10. Cabbage Cabbage belongs to the cruciferous vegetable family and is loaded with vitamins, minerals, and powerful plant compounds. It’s a great source of vitamin K, vitamin C, and many B vitamins. Furthermore, it provides insoluble fiber, a type of fiber that keeps your digestive system healthy by promoting regular bowel movements and adding bulk to stool ( 37 ). Plus, it’s low in potassium, phosphorus, and sodium, with one cup (70 grams) of shredded cabbage containing ( 38 ): sodium: 13 mg

13 mg potassium: 119 mg

119 mg phosphorus: 18 mg

11. Skinless chicken Although a limited protein intake is necessary for some people with kidney issues, providing the body with an adequate amount of high quality protein is vital for health. Skinless chicken breast contains less phosphorus, potassium, and sodium than skin-on chicken. When shopping for chicken, choose fresh chicken and avoid pre-made roasted chicken, as it contains large amounts of sodium and phosphorus. Three ounces (84 grams) of skinless chicken breast contains ( 39 ): sodium: 63 mg

63 mg potassium: 216 mg

216 mg phosphorus: 192 mg

12. Bell peppers Bell peppers contain an impressive amount of nutrients but are low in potassium, unlike many other vegetables. These brightly colored peppers are loaded with the powerful antioxidant vitamin C. In fact, one small red bell pepper (74 grams) contains 105% of the recommended intake of vitamin C. They are also loaded with vitamin A, an important nutrient for immune function, which is often compromised in people with kidney disease (40). One small red pepper (74 grams) contains ( 41 ): sodium: 3 mg

3 mg potassium: 156 mg

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156 mg phosphorus: 19 mg

13. Onions Onions are excellent for providing sodium-free flavor to renal-diet dishes. Reducing salt intake can be challenging, making finding flavorful salt alternatives a must. Sautéing onions with garlic and olive oil adds flavor to dishes without compromising your kidney health. What’s more, onions are high in vitamin C, manganese, and B vitamins and contain prebiotic fibers that help keep your digestive system healthy by feeding beneficial gut bacteria ( 42 ). One small onion (70 grams) contains ( 43 ): sodium: 3 mg

3 mg potassium: 102 mg

102 mg phosphorus: 20 mg

14. Arugula Many healthy greens like spinach and kale are high in potassium and difficult to fit into a renal diet. However, arugula is a nutrient-dense green that is low in potassium, making it a good choice for kidney-friendly salads and side dishes. Arugula is a good source of vitamin K and the minerals manganese and calcium, all of which are important for bone health. This nutritious green also contains nitrates, which have been shown to lower blood pressure, an important benefit for those with kidney disease ( 44 ). One cup (20 grams) of raw arugula contains ( 45 ): sodium: 6 mg

6 mg potassium: 74 mg

74 mg phosphorus: 10 mg

15. Macadamia nuts Most nuts are high in phosphorus and not recommended for those following a renal diet. However, macadamia nuts are a delicious option for people with kidney problems. They are much lower in phosphorus than popular nuts like peanuts and almonds. They are also packed with healthy fats, B vitamins, magnesium, copper, iron, and manganese. One ounce (28 grams) of macadamia nuts contains ( 46 ): sodium: 1.4 mg

1.4 mg potassium: 103 mg

103 mg phosphorus: 53 mg

16. Radish Radishes are crunchy vegetables that make a healthy addition to a renal diet. This is because they are very low in potassium and phosphorus but high in many other important nutrients. Radishes are a great source of vitamin C, an antioxidant that has been shown to decrease the risk of heart disease and cataracts ( 47 , 48 ). Additionally, their peppery taste makes a flavorful addition to low sodium dishes. A half cup (58 grams) of sliced radishes contains ( 49 ): sodium: 23 mg

23 mg potassium: 135 mg

135 mg phosphorus: 12 mg

17. Turnips Turnips are kidney-friendly and make an excellent replacement for vegetables that are higher in potassium like potatoes and winter squash. These root vegetables are loaded with fiber and vitamin C. They are also a decent source of vitamin B6 and manganese. They can be roasted or boiled and mashed for a healthy side dish that works well for a renal diet. A half cup (78 grams) of cooked turnips contains ( 50 ): sodium: 12.5 mg

12.5 mg potassium: 138 mg

138 mg phosphorus: 20 mg

18. Pineapple Many tropical fruits like oranges, bananas, and kiwis are very high in potassium. Fortunately, pineapple makes a sweet, low potassium alternative for those with kidneys problems. Plus, pineapple is rich in fiber, manganese, vitamin C, and bromelain, an enzyme that helps reduce inflammation ( 51 ). One cup (165 grams) of pineapple chunks contains ( 52 ): sodium: 2 mg

2 mg potassium: 180 mg

180 mg phosphorus: 13 mg

19. Cranberries Cranberries benefit both the urinary tract and kidneys. These tiny, tart fruits contain phytonutrients called A-type proanthocyanidins, which prevent bacteria from sticking to the lining of the urinary tract and bladder, thus preventing infection (53, 54 ). This is helpful for those with kidney disease, as they have an increased risk of urinary tract infections (55). Cranberries can be eaten dried, cooked, fresh, or as a juice. They are very low in potassium, phosphorus, and sodium. One cup (100 grams) of fresh cranberries contains ( 56 ): sodium: 2 mg

2 mg potassium: 80 mg

80 mg phosphorus: 11 mg

20. Shiitake mushrooms Shiitake mushrooms are a savory ingredient that can be used as a plant-based meat substitute for those on a renal diet who need to limit protein. They are an excellent source of B vitamins, copper, manganese, and selenium. In addition, they provide a good amount of plant-based protein and dietary fiber. Shiitake mushrooms are lower in potassium than portobello and white button mushrooms, making them a smart choice for those following a renal diet ( 57 , 58 ). One cup (145 grams) of cooked shiitake mushroom contains ( 59 ): sodium: 6 mg

6 mg potassium: 170 mg

170 mg phosphorus: 42 mg

healthline.com - The 20 Best Foods for People with Kidney Disease - Healthline

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