🟢 Safe
Oxalate <25 mg/serving
🟡 Caution
Oxalate 25-99 mg/serving
🔴 Avoid
Oxalate ≥100 mg/serving
🟡

Nuts, Brazil Nuts, raw or roasted

🟡 Caution — Moderate
52 mg oxalate / serving
Serving: 1/4 cup (29 g) | Per 100 g: 181 mg
✓ Medically Reviewed Content reviewed by OxalateWatch Editorial Team. Based on Harvard T.H. Chan SPH oxalate data (2024) and NKF/AUA dietary guidelines.

📊 Nutrition at a Glance

52 mg
Oxalate / serving
Moderate
0 mg
Sodium / 100g
Low Na
20.5 g
Protein / 100g
Tier 1
117 mg
Calcium / 100g
Tier 1

📏 Oxalate by Serving Size

ServingWeightOxalateVerdict
1/4 cup29 g52 mg Caution
2 x 1/4 cup58 g104 mg Avoid
½ x 1/4 cup14 g26 mg Caution

🏷️ Tags

Nuts & Seeds Moderate Oxalate 🟡 Oxalate Caution Calcium-Rich

🟡 See all Nuts & Seeds rated Caution for kidney stones →

⚖️ Compare this food: · vs Poppy seed · vs Brazil nuts

🔗 Related Foods

❓ Frequently Asked Questions

Is Nuts safe for kidney stones?

It's not off-limits, but keep an eye on portions. Nuts has 52 mg oxalate per 1/4 cup — that's in the caution zone (25-99 mg). Eat it, just don't make it a daily thing.

How much oxalate is in Nuts?

52 mg — that's the oxalate in a standard 1/4 cup of Nuts. For the 100g comparison freaks: 181 mg. Source is Harvard's 2024 food analysis project.

Is Nuts a high-oxalate food?

Moderate. Nuts has 52 mg oxalate per 1/4 cup — not high enough to panic, not low enough to ignore. Portions matter with this one.

What are the best low-oxalate alternatives to Nuts?

Look at the 'Safe Alternatives' section right below this FAQ. Those foods are all under 25 mg oxalate per serving and in the same category as Nuts. Pick from those.

How much Nuts is safe to eat?

Think garnish, not main dish. Nuts at 52 mg per 1/4 cup is a lot for one food. Use smaller amounts spread across meals or as a flavor accent rather than the centerpiece.

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.

🔍 Explore More About This Food

📚 Data Sources

Oxalate: Harvard T.H. Chan School of Public Health (2024) via OHF. Nutrition: USDA FoodData Central (SR Legacy 2018 & Foundation Foods).

📖 Key Scientific References

Taylor EN, Curhan GC. Oxalate intake and the risk for nephrolithiasis. J Am Soc Nephrol. 2007;18(7):2198-2204. PMID: 17538185
Borghi L, Schianchi T, Meschi T, et al. Comparison of two diets for the prevention of recurrent stones in idiopathic hypercalciuria. N Engl J Med. 2002;346(2):77-84. DOI: 10.1056/NEJMoa010369
Fink HA, Akornor JW, Garimella PS, et al. Diet, fluid, or supplements for secondary prevention of nephrolithiasis. Eur Urol. 2009;56(1):72-80. DOI: 10.1016/j.eururo.2009.03.031
Ferraro PM, Taylor EN, Gambaro G, Curhan GC. Dietary and lifestyle factors for primary prevention of nephrolithiasis. BMC Nephrol. 2020;21(1):267. PMID: 32652950
Pearle MS, Goldfarb DS, Assimos DG, et al. Medical management of kidney stones: AUA guideline. J Urol. 2014;192(2):316-324. DOI: 10.1016/j.juro.2014.05.006
Liebman M, Costa G. Effects of calcium and magnesium on urinary oxalate excretion after oxalate loads. J Urol. 2000;163(5):1565-1569. PMID: 10751889
Holmes RP, Assimos DG. The impact of dietary oxalate on kidney stone formation. Urol Res. 2004;32(5):311-316. DOI: 10.1007/s00240-004-0437-3
Lin BB, Lin ME, Huang RH, et al. Dietary treatment and fluid intake for prevention of recurrent calcium stones. PLoS One. 2021;16(4):e0250257. PMID: 33872340
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.