What foods help protect my kidneys in stage 3 CKD?

Question

Hello doctor,

I have stage 3 chronic kidney disease (CKD), and honestly, I am shocked. My creatinine was a bit high (1.9 mg/dL), and my estimated glomerular filtration rate (eGFR)was around 48. I do not feel too sick except for some swelling in my feet and tiredness. I have had high blood pressure (BP) for years and take Lisinopril. Am I going to need dialysis soon? How do I slow this down? My doctor mentioned controlling protein and salt, but it is so hard to understand the diet. Should I drink more water or less? Also heard about sodium-glucose cotransporter-2 (SGLT2) inhibitors protecting the kidneys. Is that something I should ask for?

Kindly help.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

Based on what you described, your results suggest stage 3 chronic kidney disease (CKD), which means your kidneys are moderately reduced in function but still working well enough that dialysis is not needed at this stage. Many people can stay in this stage for years or even decades if they manage it properly. The swelling and tiredness you feel are common symptoms when the kidneys start to struggle with balancing fluids and filtering waste, but your situation can definitely be stabilized with the right steps.

The most important thing right now is tight blood pressure control since high blood pressure is both a cause and a driver of kidney damage. Lisinopril is an excellent medication because it belongs to the angiotensin-converting enzyme (ACE) inhibitor class, which not only lowers blood pressure but also helps protect kidney function. Your doctor will likely monitor your potassium and creatinine levels regularly to ensure it is safe to continue.

Regarding your diet, keeping salt intake very low (under about 2 grams of sodium per day) can help reduce swelling and protect your kidneys. You should also limit protein intake slightly, not eliminate it, but avoid very high-protein diets like those with large amounts of meat or protein supplements, since excess protein makes the kidneys work harder. A dietitian specializing in kidney disease can help you find the right balance. As for fluids, you generally should not overdo or restrict water unless your doctor specifically advises it. If you are not having trouble urinating and your swelling is mild, drinking a moderate, steady amount (roughly 1.5 to 2 liters a day) is usually fine, but this can vary depending on your laboratory results and swelling level.

You are right to ask about sodium-glucose cotransporter-2 (SGLT2) inhibitors (like Dapagliflozin or Empagliflozin). These medications were originally developed for diabetes, but studies now show they can slow chronic kidney disease progression even in people without diabetes, especially those with protein in the urine. They also help protect the heart. It is definitely worth discussing with your doctor whether you are a candidate.

Finally, keep an eye on other factors that influence kidney health: avoid nonsteroidal anti-inflammatory drugs (NSAIDs) like Ibuprofen, control blood sugar if diabetic, maintain a healthy weight, and monitor your kidney laboratory results regularly. You are not heading toward dialysis anytime soon if you manage these things carefully. With consistent treatment and lifestyle control, it is absolutely possible to preserve your kidney function and feel better day to day.

I hope you are satisfied with my answer. For further queries, you can consult me at iCliniq.

Thank you.