I feel tired, lightheaded, and puffy. How to preserve my kidneys?

Question

Hello doctor,

I have been feeling extra tired lately, like deep fatigue I cannot shake. My legs also feel puffy by the end of the day, and sometimes my ankles swell. I’m trying to keep up with my fluid limits and low-sodium diet, but I am wondering if my kidney function is slipping again.

I have been super careful with meds, no over-the-counter painkillers or anything, but I have had this dull backache that is worrying me. Do you think it is related?

Also, I get lightheaded when I stand up too fast now. I am doing my best to eat healthy and stay positive, but it is hard not to feel anxious before each laboratory test. I just do not want to end up on dialysis someday. Are there new treatments or lifestyle tweaks that could help me preserve kidney function longer?

Kindly suggest.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

I hope you are doing well, and you have to know that the symptoms you are describing, persistent fatigue, ankle swelling by the end of the day, and lightheadedness when standing, can be seen when kidney function is reduced, but they are not specific on their own.

So the only reliable way to know whether there has been a change is through your laboratory results, particularly your creatinine, estimated GFR (glomerular filtration rate), potassium, bicarbonate, and urine protein levels.

Fluid retention from reduced kidney function can cause leg and ankle swelling, but it can also be influenced by salt intake, medications, heart function, and how long you are sitting or standing during the day.

The fatigue may be related to anemia, which is very common in chronic kidney disease, or to metabolic factors such as acidosis, both of which are treatable once identified.

The lightheadedness when standing sounds like orthostatic hypotension, which can occur if blood pressure medications are too strong.

If you are slightly dehydrated from strict fluid limits, or if your blood pressure runs low, this is something we can evaluate by checking sitting and standing blood pressures and reviewing your medications.

The dull backache is usually not a direct sign of kidney function decline unless there is an acute process such as obstruction, infection, or kidney enlargement, so it is more often musculoskeletal, but if it is new, persistent, or associated with fever, urinary symptoms, or a sudden change in labs, it should be assessed.

You are already doing many of the most important protective steps: avoiding NSAIDs (non-steroidal anti-inflammatory drugs), following a low-sodium diet, and being mindful of fluids.

Additional measures that help preserve kidney function include tight blood pressure control (usually with ACE (angiotensin-converting enzyme) inhibitors or ARBs (angiotensin II receptor blockers) if appropriate), good blood sugar control if diabetes is present, maintaining a healthy weight, moderating protein intake to the level recommended by your nephrologist (not excessively high), correcting anemia and vitamin D deficiency, and treating metabolic acidosis when present.

Newer medications such as SGLT2 (sodium-glucose cotransporter 2) inhibitors have been shown to slow kidney disease progression in many patients, even in some without diabetes, and may be something to discuss with your doctor if you are not already on one.

The most important thing to remember is that chronic kidney disease often progresses slowly, and many patients remain stable for years with careful management.

Dialysis is not inevitable, and the fact that you are engaged in your care, following dietary advice, and avoiding harmful medications significantly improves your long-term outlook.

Regular monitoring allows us to intervene early if there are changes, and many of the complications that cause symptoms, such as anemia, fluid retention, and blood pressure fluctuations, can be treated effectively to improve how you feel day to day.

I hope this helps.

Thank you.