Kidney stones form when mineral salts in urine combine into solid crystals. The most common type are calcium oxalate stones. In the context of kidney stones, certain dietary aspects are generally taken into account – such as a low-oxalate diet, adequate fluid intake, and controlled salt and protein consumption. Here you can see which foods are classified as suitable or less suitable with kidney stones.
With Kidney Stones, 253 foods are currently allowed and 15 foods are not recommended. Check all foods in the interactive tool above.
Low-oxalate foods are recommended, such as most fruits (except rhubarb), rice, pasta, potatoes, dairy products, and lean meat in moderation. Adequate hydration (at least 2.5 liters daily) and moderate salt intake are essential.
Highly oxalate-rich foods like spinach, rhubarb, cocoa, almonds, peanuts, and beetroot should be strictly limited with calcium oxalate stones. Very salty, sugary, and highly processed foods also increase the risk.
Yes, adequate fluid intake is the most important preventive measure. At least 2.5 liters per day, ideally water or unsweetened herbal teas. The goal is a urine volume of over 2 liters daily to dilute stone-forming substances.
No, quite the opposite! A calcium-rich diet (through dairy products, not supplements) can actually protect against stones, as calcium binds oxalate in the gut, reducing its absorption into the blood and urine. Low-calcium diets increase stone risk.
Water is best. Lemon water can help as citrate inhibits stone formation. Herbal teas are also suitable. Avoid sugary soft drinks, cola, and excessive black tea as these increase stone risk.
Maximum 5-6g of salt per day. Excessive salt intake increases calcium excretion in urine and thus stone risk. Avoid heavily salted processed foods, cold cuts, and snacks.