Diet for Kidney Stone Patients – Fundamental Nutritional Guidelines
Kacper Nowak
2026-03-24
8 min. read
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A global increase in the incidence of kidney stones is observed, classifying it as a so-called civilization disease. Typically, a sick person becomes aware of kidney stones when deposits (stones) composed of substances present in urine accumulate within the urinary tract, causing a very painful kidney colic attack. In the disease, dietary intervention plays a crucial role, effectively preventing kidney stone recurrences and helping to reduce the risk of burdening invasive surgical interventions. How to adjust the diet? The choice of the appropriate nutritional model depends on the type of stones and crystals present in the urine.
Kidney stones – everything you need to know
Kidney stones are a chronic systemic condition characterized by the presence of insoluble deposits in the urinary system in the form of stones or salt crystals. These are the result of precipitation of chemical substances in the urine (when the concentration of compounds exceeds a certain level of solubility in the body). Stones can form in any part of the urinary system, be single or multiple, and accumulate on one or both sides in the kidneys (most commonly the renal pelvis), ureters, and bladder. They are typically composed of calcium (71%), potassium (26%), and phosphorus (7%). Kidney stones affect 1-2% of the population, most commonly between the ages of 20 and 40. Among patients, there are twice as many men as women, which may be due to more frequent obesity and poorer dietary habits in men.
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