“Protein: the myth that puts your kidneys at risk”
Overuse of protein is a silent health bomb
In recent years, protein has become the new gold of the food industry. Yogurt, bars, puddings, pasta: everything is “high-protein.” But behind this obsession lies a disturbing reality. In Italy, there are 300,000 kidney patients and just as many on dialysis. It is a real epidemic, often ignored, but one that could be fueled by excess protein.
The protein myth: who benefits?
The dominant narrative—fueled by fitness influencers, companies, and aggressive marketing—leads us to believe that “more protein = better health.” But this is not the case. Cardiologist Eric Topol, one of the most cited in the world, reports that over 55% of men and 35% of women already exceed the recommended doses. Yet social media suggests up to 200 grams per day, completely ignoring medical guidelines.
What happens to the body?
Nutritionist Fabio Mariniello is clear: “Excess protein can compromise the kidneys, intestines, and metabolism. Nitrogenous waste must be disposed of, but the kidneys are not sewers. The renal filter becomes damaged, and when we find protein in the urine, the damage has already begun.”
Professor Margaret Murray adds: “Excess protein does not accumulate as a reserve: it is converted into fat or waste. And those with kidney problems are at serious risk of worsening.”
Recommended doses
- 0.8–0.9 g/kg/day for healthy individuals
- Up to 1.5–2 g/kg/day only for professional athletes
- Never exceed this amount: there are no additional benefits, only risks
Protein yes, but with moderation
Protein is essential, but not infinite. The body cannot store it. And when it comes from animal sources or ultra-processed products, the risks increase: diabetes, intestinal dysbiosis, cardiovascular disease.
Conclusion
This isn’t just a fad. It’s a huge business that exploits people’s fear of not being “fit.” But health isn’t built with bars and powders. It’s built with balance, awareness, and respect for our bodies. And above all, for our kidneys.
