High protein diet to build muscles: Nephrologist warns it could harm kidney health

Fitness diet: Protein powders, shakes and heavily restricted meal plans often encourage people to consume far more protein than natural diets provide (Image: Pexels)

• Excessive protein intake can strain the kidneys over time
• High-protein diets may miss key nutrients and cause imbalance
• Consult professionals before increasing protein for fitness goals

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Protein shakes, protein bars and protein-packed meal plans are some of the most common words today. For fitness enthusiasts chasing lean muscle or rapid fat loss, protein has become the hero nutrient. However, experts suggest that your kidneys may not he able to cope with this surge of protein.

Protein, experts say, is undeniably important for muscle repair and health. Nevertheless, when the body processes protein, it produces waste products that kidneys must filter from the blood. Dr Saiprasad Sahoo, Senior Consultant – Nephrology, Manipal Hospital Bhubaneshwar, tells Moneycontrol: “The kidneys play a crucial role in clearing nitrogen waste formed during protein metabolism. When protein intake goes far beyond the body’s requirements, the kidneys are forced to work harder for long periods.

Health risks of excess protein

Dr Sahoo explains why excessive protein can stress the kidneys:

Also read | Nutritionist shares 10 high-protein foods that helped her lose 25 kg in just 4 months

The kidneys working overtime

When protein is broken down in the body, nitrogen-based waste products are created. “The kidneys filter these substances from the bloodstream. Excessive protein consumption means more waste to eliminate, forcing these organs to function at a higher level for extended periods,” the expert suggests.

Hidden risks for undiagnosed kidney conditions

Most healthy people tolerate moderate protein increases. The concern arises when people with undetected kidney problems adopt aggressive high-protein diets. “Some may feel perfectly healthy yet have early kidney issues,” says Dr Sahoo. He adds, “A sudden surge in protein intake can accelerate stress on already vulnerable kidneys.”

Supplements and extreme diet trends

Protein powders, shakesand heavily restricted meal plans often encourage people to consume far more protein than natural diets provide. “Such patterns may appear effective for muscle building but can quietly push daily intake beyond what the body truly requires,” he says.

Also read | Diet tips: 5 healthy vegetarian foods that offer more protein than eggs

Nutritional gaps from restrictive eating

High-protein regimes sometimes sideline other essential nutrients. Diets overloaded with protein, says Dr Sahoo, may lack adequate fibre, carbohydrates and important vitamins or minerals. Slowly, this imbalance can affect digestion, energy levels and overall health, undermining the very fitness goals people seek.

Balance is the real fitness strategy

Protein is only one part of a healthy diet. “Fitness goals should never come at the cost of health. Adequate hydration, balanced meals and professional guidance are essential before increasing protein intake,” warns Dr Sahoo.

FAQs on High Protein Diet

1. What are the benefits of a high-protein diet?

A high-protein diet aids in muscle repair and growth and supports overall health. Protein is essential for body functions, including the creation of enzymes and hormones.

2. Can too much protein affect kidney health?

Yes, excessive protein can stress the kidneys by increasing the need to filter nitrogen-based waste products, potentially leading to long-term kidney issues.

3. Are high-protein diets safe for everyone?

While most healthy individuals handle moderate protein increases, those with undiagnosed kidney issues may experience increased kidney stress from high-protein diets.

4. Do protein supplements pose any risks?

Protein powders and shakes can lead to excessive protein intake, which might surpass the body's requirements and cause potential kidney strain over time.

5. How can one maintain balance in a high-protein diet?

Ensure a high-protein diet includes adequate fibre, carbohydrates, and essential vitamins and minerals. Balanced meals and hydration, along with professional guidance, are crucial for health and fitness.

Disclaimer: This article, including health and fitness advice, only provides generic information. Don’t treat it as a substitute for qualified medical opinion. Always consult a specialist for specific health diagnosis.