CKD Nutrition

If you’ve been told to “watch what you eat” for chronic kidney disease (CKD), you’re probably wondering what that actually means.

Maybe you’ve heard conflicting advice. Or you’ve seen a long list of foods to avoid, but not much guidance on what’s safe or good to eat. Maybe you’re even afraid to eat the wrong thing.

Let’s clear up the confusion.

As a registered dietitian who specializes in kidney health, I help people with CKD understand how food impacts their kidneys—and how to eat in a way that supports their health without cutting out all the things they love.

The 4 Nutrients That Matter Most in CKD Nutrition

Every person with CKD is different, and the right nutrition plan depends on your lab values, kidney function, and medical history. But there are four nutrients that come up again and again when it comes to kidney health:

Protein

You don’t necessarily need to avoid protein—but you do need the right type and amount for your stage of CKD. For many people, that means shifting toward more plant-based proteins (like beans, tofu, or nuts) and being mindful of portion sizes of meat, poultry, or seafood.

Potassium

Potassium isn’t always something to limit. In fact, many people with CKD benefit from eating more potassium-rich fruits and vegetables. Whether you need to monitor it depends on your labs—so don’t cut it out without a good reason. Sign Up for our Free Email Mini Course on 5 Ways to Control Potassium  – without cutting out high potassium foods!

Sodium

Most people with CKD benefit from lowering their sodium intake. Too much sodium can raise blood pressure and make your kidneys work harder. Small changes—like using herbs, spices, and acids instead of salt—can make a big difference.

Phosphorus

Phosphorus is a mineral that can build up in the blood when kidney function declines. The biggest concern isn’t natural phosphorus in food—it’s phosphorus additives in processed foods. Learning to spot these on food labels is key.

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