28/05/2025
If you have kidney stones—or are at risk for developing them—your diet plays a major role in prevention and management. The specific foods to avoid depend on the type of kidney stone you have, but here are general guidelines:
🔷 For Most Kidney Stones (especially calcium oxalate stones, the most common type):
🚫 Foods High in Oxalates
These can contribute to calcium oxalate stones.
Spinach
Beets
Rhubarb
Nuts (especially almonds and cashews)
Chocolate
Tea (especially black tea)
Sweet potatoes
Soy products (e.g., tofu, soy milk)
Tip: Pair oxalate-rich foods with calcium-rich foods to help bind oxalates in the gut, reducing stone risk.
🔶 For Uric Acid Stones:
🚫 Foods High in Purines
Purines break down into uric acid.
Red meat (beef, lamb, pork)
Organ meats (liver, kidneys)
Shellfish (shrimp, lobster)
Anchovies, sardines, and mackerel
Alcohol (especially beer)
Sugary beverages (especially those with high-fructose corn syrup)
⚠️ General Recommendations (for all stone types):
✅ Stay Hydrated
Drink at least 2–3 liters of water daily to dilute urine.
🚫 Limit Sodium (Salt)
Too much salt increases calcium in urine.
Avoid processed foods, canned soups, fast food, salty snacks.
🚫 Limit Sugar and Soda
Especially cola beverages (contain phosphoric acid which may increase risk).
🚫 Avoid Excess Vitamin C Supplements
High doses (>1000 mg/day) can increase oxalate production.
