The headline “#1 Vitamin to Stop Proteinuria and Repair Kidneys: Could Vitamin D Be Your Secret Weapon?” is misleading.
Here’s what the evidence shows:
- Vitamin D is important for bone health and plays roles in the immune system and other body functions.
- People with Chronic kidney disease often have low vitamin D levels, and treating a deficiency may be beneficial.
- Some studies suggest vitamin D or certain active vitamin D medications may slightly reduce proteinuria (protein in the urine) in some people with chronic kidney disease, especially when used alongside standard treatments. However, the effect is generally modest and not seen in everyone.
- There is no strong evidence that vitamin D can “repair kidneys” or stop proteinuria on its own.
The main evidence-based treatments for proteinuria depend on the cause but often include:
- Controlling blood pressure.
- Managing diabetes if present.
- Medications such as ACE inhibitors or ARBs, which can reduce proteinuria and help protect kidney function.
- In some cases, SGLT2 inhibitors, which have been shown to slow kidney disease progression in many people with chronic kidney disease.
Taking high doses of vitamin D without medical advice is not recommended, as excessive vitamin D can lead to high calcium levels and other health problems.
If you’ve been told you have proteinuria, it’s important to identify the underlying cause rather than relying on a single vitamin. A healthcare professional may recommend blood tests, urine tests, and, if appropriate, checking your vitamin D level before deciding whether supplementation is beneficial.
