Why do fluids matter?
Adequate fluid intake dilutes urine, making it harder for stone-forming substances to collect together. Drinking water across the day is an important part of prevention. Needs vary with heat, activity and sweating. People with a fluid restriction because of heart or kidney disease should agree an appropriate amount with their clinician. [1, 2]
Regular hydration for prevention is different from rapidly drinking a large volume during pain in an attempt to force a stone to pass. Suspected obstruction or infection requires assessment without delay.
Reviewing salt intake
High sodium intake can increase calcium excretion in urine. Salt added at the table is only one source: prepared soups, sauces, processed meats and packaged snacks also contribute. Checking the stated serving size helps make food-label comparisons meaningful rather than relying on a reduced-salt claim alone. [1]
Should calcium-containing foods be avoided?
A calcium stone does not mean that all dietary calcium, including dairy foods, should be removed. Calcium from food can bind oxalate in the bowel. Unnecessary restriction may be unhelpful for both stone prevention and bone health. Dietary calcium and calcium supplements also require different considerations; a food recommendation is not automatically a supplement recommendation. [1, 2]
Oxalate and protein require context
People with calcium oxalate stones may need to review high-oxalate foods and portion sizes. Removing all vegetables or nuts is not a balanced response. Animal protein intake is considered alongside stone type and the wider diet. Advice for uric acid stones and calcium oxalate stones is not identical. [1]
Making the plan practical
A short record of food and drinks, the stone analysis and any 24-hour urine results can help a clinician or dietitian identify realistic changes. Their effects can then be reviewed over time. Internet lists of drinks said to dissolve stones cannot account for stone composition, kidney function or other conditions. A useful prevention plan is one that fits the person and can be followed consistently. [2]
References
- NIDDK: Eating, diet and nutrition for kidney stones
- EAU 2026: Metabolic evaluation and recurrence prevention
This article provides general health information. Consult your clinician for individual diagnosis and treatment decisions, and your pharmacist for questions about medicine use.
Published by Aymed İlaç · 17 October 2026