Yes, kidney patients can eat seafood, and it's often encouraged as a source of lean protein and omega-3s, but portion size, preparation, and specific types matter due to phosphorus, sodium, and potassium, so it's best to choose fresh, cook it simply (broil/grill), avoid processed forms, and always consult a renal dietitian. Oily fish like salmon are great, while larger fish may have mercury concerns, and shellfish like shrimp and crab are generally safe in moderation.
Fish and seafood
Broiling is a great cooking method to prepare fish or seafood and keep the dish healthy. Cod, flounder, halibut, whitefish, catfish, salmon, tuna steaks and shrimp are good choices for your kidney diet.
Shellfish can be included at all stages of kidney disease. Ask your kidney dietitian about how much shellfish to include in your diet. Be sure you buy shellfish from a reliable vendor to avoid food-borne illness. Some processed or frozen seafood is very high in sodium and should therefore be limited.
If you have chronic kidney disease (CKD), avoid high-sodium, high-phosphorus, and potassium-rich foods. Examples include processed snacks, cola, bananas, and canned soups. Always consult your healthcare provider for personalized guidance on your diet.
Potassium and phosphorus content varies with the fish variety–catfish, cod, orange roughy, sea bass and sole are among the lowest. Salmon contains higher amounts of potassium and phosphorus but can still be worked into a kidney diet by combining it with lower potassium sides and adjusting phosphorus binders if needed.
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What can I do to keep my kidneys healthy?
The health benefits of salmon make it an excellent choice for the kidney diet. Salmon is loaded with omega-3 fatty acids that help decrease chronic inflammation and protect against heart disease and cancer.
To strengthen your kidneys, focus on a healthy lifestyle: stay hydrated with water, eat a balanced diet low in salt and processed foods, exercise regularly, maintain a healthy weight, and avoid smoking and excessive alcohol, while also managing blood pressure and blood sugar to prevent damage.
Some types of fish are not ideal if you have high creatinine or chronic kidney disease (CKD): Salmon, tuna, mackerel, sardines – while rich in omega-3s, they're also high in phosphorus and purines, which can raise creatinine and uric acid. Shellfish (shrimp, crab, lobster) – often high in sodium and cholesterol.
Diabetes is the most common cause of kidney disease. Both type 1 and type 2 diabetes. But also heart disease and obesity can contribute to the damage that causes kidneys to fail. Urinary tract issues and inflammation in different parts of the kidney can also lead to long-term functional decline.
Acute kidney failure can be caused by factors like severe dehydration, infections, or blockages. The good news is that with the right treatment, it's often possible to reverse kidney disease in these cases. Your kidneys can return to normal function after the underlying issue is resolved.
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Other ways to boost your kidney health are to: Avoid processed foods, which are high in salt. Eat plenty of fruits and veggies. Exercise routinely.
Here's a breakdown of the six most common supplements people with CKD may need to support kidney health.
Canned foods, some frozen foods, and most processed meats contain large amounts of salt. Snack foods such as chips and crackers are also high in salt. Table salt, some seasonings, ketchup, mustard, and certain sauces such as barbecue, soy, and teriyaki sauces are high in sodium.
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Heart disease, uncontrolled high blood pressure or diabetes can make kidney disease get worse faster. So it is important that your doctor keeps an eye both on how your kidneys are working and your overall health.
The main treatments are:
You can check kidney function at home using at-home test kits for urine (detecting protein/albumin) or finger-prick blood tests (checking creatinine/eGFR), often with smartphone apps for analysis, or by monitoring symptoms like increased nighttime urination (nocturia), swelling, or changes in urine (blood, foam) and discussing results with a doctor, as home tests screen but don't replace professional diagnosis.
Vulnerable Kidneys Can't Repair
Kidneys play a vital role in filtering waste from the blood. However, unlike some other organs, damaged kidney cells have an extremely limited ability to regenerate or repair themselves.
In the general population, approximately 38% of adults aged 70 or older have an estimated glomerular filtration rate (eGFR) < 60 ml/min/1.73 m2, with most having moderate reductions in eGFR in the 30-59 ml/min/1.73 m2 range (1).
Overview. The early stages of chronic kidney disease may not have symptoms, but kidney failure symptoms may include feeling sick, confusion, swelling and peeing a lot.
What are the signs of AKI recovery?
Chronic kidney disease (CKD) is a condition that affects an estimated 37 million American adults—or one in seven. And yet, many people don't even know they have it. That's because CKD is a silent disease, progressing without symptoms as the kidneys gradually—and permanently—lose function over months or years.