Can Kidney Donor Athletes Eat More Protein? What You Need to Know

If you’re an athlete who has recently donated a kidney or is thinking about donating, you might be wondering: Can I still eat more protein to fuel my training? Is a high-protein diet safe with one kidney?

These are important questions. While protein is crucial for muscle repair, recovery, and overall performance, breaking down protein produces waste like urea and acid, which the kidney must filter out. With one kidney doing all the work, large amounts of excess protein can make that job harder. Striking the right balance is key.

How Much Protein Is Safe for Kidney Donor Athletes?

The general guideline for healthy adults is 0.36 grams of protein per pound of body weight daily. However, athletes often require more to support muscle synthesis and recovery.

Here are some general guidelines for daily protein intake for athletes who need extra protein to support the demands of training and performance:

• Recreational athletes: 0.36–0.55 grams per pound
• Endurance athletes: 0.55–0.64 grams per pound
• Strength athletes: 0.64–0.9 grams per pound

In general, protein intake of more than 0.9 grams per pound of body weight per day is considered excessive. Use a protein calculator or talk to your transplant center or a registered dietitian to fine-tune the number based on your size, sport, and training level.

Tips for Donor Athletes on Managing Protein

While protein is vital for athletic performance, excessive intake can strain your remaining kidney. Here are some tips to balance your needs:

• Prioritize high-quality protein sources: Lean meats, fish, eggs, dairy, legumes, and tofu.
• Distribute protein intake: Aim for 15–30 grams of protein per meal to optimize absorption.
• Stay hydrated: Your remaining kidney works hard—give it the water it needs to flush out waste.
• Skip the powders: Don’t rely on protein shakes or supplements unless recommended by your healthcare provider.
• Watch for hidden protein: Energy bars and snacks can pack more protein than expected. Check nutrition labels.
• Go plant-forward: Adding more plant-based protein to your diet can reduce the acid load on your kidney and benefit your heart and blood pressure.

As a kidney donor athlete, you don’t need to drastically limit your protein intake, but it’s essential to avoid excessive consumption. Tailoring your diet to include sufficient, high-quality protein while monitoring kidney function will support both your athletic performance and long-term health. Always consult with healthcare professionals to create a nutrition plan that aligns with your individual needs.