๐Ÿง‚ High-Sodium Nuts & Seeds โ€” Kidney Stone Risk Guide

Sodium is a hidden kidney stone risk factor. Excess sodium pushes more calcium into your urine, raising stone formation risk. These 2 Nuts & Seeds foods are particularly high in sodium โ€” 460+ mg per 100g. Watch these closely, and avoid adding extra salt.
๐Ÿ“Š 2 foods
โœ“ Lab-Verified Data Oxalate values from Harvard T.H. Chan SPH Oxalate Database (2024), measured via ion chromatography. This site is a dietary reference tool, not a medical resource.

Nuts and seeds are the highest-oxalate snack category in the database. Almonds measure around 107 mg per quarter-cup โ€” above the avoid threshold โ€” while walnuts and cashews sit in the moderate range, and chia, sesame, and poppy seeds climb higher still. The trap is that nuts read as 'healthy food,' which makes the oxalate load easy to overlook. The stone-aware pattern: treat nuts as a measured treat rather than a free snack, keep servings to a small handful, and pair them with dairy or another calcium source in the same sitting.

Sodium is the hidden dial in stone prevention: excess sodium makes the kidneys excrete more calcium, and urinary calcium is a primary stone ingredient. The general target is under 2,300 mg of sodium per day, and processed and packaged foods are where sodium hides โ€” not the saltshaker. For stone patients who also track oxalate, the two columns interact: a food can be low in oxalate but risky through sodium, which is why the full picture matters rather than a single nutrient.

Among the 2 nuts & seeds foods shown here, the list is ranked by oxalate per serving so the safest options are immediately visible โ€” scan the top of the grid for daily staples and treat the lower entries as portion foods.

High-risk subset: 1 foods (50%) are rated Avoid. Focus on the 1 safe options to minimize risk.
Average sodium: 485 mg/100g across 2 foods. The general recommendation is under 2,300 mg/day total. These foods can add up quickly.
Data source: All oxalate values from Harvard T.H. Chan SPH (2024) via OHF. Nutrition data from USDA FoodData Central where available.

๐Ÿฝ๏ธ Foods in This Category

๐ŸŸข Seeds
4 mg / serving
Safe
๐Ÿ”ด Seeds
114 mg / serving
Avoid

โ“ Frequently Asked Questions

Why does sodium matter for kidney stones?

High sodium intake increases calcium in urine โ€” a direct risk factor for calcium oxalate stones. The general recommendation is under 2,300 mg sodium per day.

How do I reduce sodium in these foods?

Choose low-sodium or no-salt-added versions when available. Avoid adding table salt during cooking or at the table. Rinse canned foods to remove excess sodium.

What's a safe sodium target?

For kidney stone patients, aiming for under 2,000 mg/day is reasonable. The NKF recommends under 2,300 mg. Check individual food pages for sodium per serving.

This is dietary reference information, NOT medical advice. Talk to your doctor or a registered dietitian before changing your diet. Oxalate tolerance varies by person, stone type, and medication.