Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
Walnuts are moderate in oxalate at 18 mg per ounce — safely in the green zone. They're rich in omega-3 fatty acids (the plant form, ALA) and have a distinctly earthy flavor. A handful as a snack or chopped onto a salad is fine. Walnut butter is a good alternative to almond butter. The omega-3 content makes walnuts arguably the healthiest nut overall — and from an oxalate perspective, they're well within the safe range. Just don't eat an entire bag in one sitting.
📊 Nutrition at a Glance
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 1/4 cup | 29 g | 18 mg | Safe |
| 2 x 1/4 cup | 58 g | 36 mg | Caution |
| ½ x 1/4 cup | 14 g | 9 mg | Safe |
🏷️ Tags
🟢 See all Nuts & Seeds rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Can I eat Nuts with kidney stones?
Yep, you're good. Nuts clocks in at 18 mg oxalate per 1/4 cup — way under the 25 mg cutoff. Eat it without the stress. Measured by Harvard, not guessed.
What's the oxalate content of Nuts?
Quick math: 1/4 cup of Nuts = 18 mg oxalate. 100g = 62 mg. Both numbers come from Harvard's latest lab measurements. Not AI, not a database, actual lab work.
Is Nuts low or high oxalate?
Nope. Nuts is a low-oxalate food — just 18 mg per 1/4 cup. Well under the 25 mg cutoff. You're in the clear with this one.
What are the best low-oxalate alternatives to Nuts?
Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as Nuts. Grab one of those and you dodge the oxalate while keeping similar flavors.
How much sodium does Nuts have?
Low sodium: 0 mg/100g. That's a non-issue for kidney stones. Just don't undo it by drowning it in salt during cooking.