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

Nuts, Hazelnut or filberts, Raw

🟡 Caution — Moderate
53 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

53 mg
Oxalate / serving
Moderate
0 mg
Sodium / 100g
Low Na
13.5 g
Protein / 100g
Tier 1
134 mg
Calcium / 100g
Tier 1

📏 Oxalate by Serving Size

ServingWeightOxalateVerdict
1/4 cup29 g53 mg Caution
2 x 1/4 cup58 g106 mg Avoid
½ x 1/4 cup14 g26.5 mg Caution

🏷️ Tags

Nuts & Seeds Plant-Based 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

Should I avoid Nuts if I have kidney stones?

Awareness over avoidance. Nuts has 53 mg oxalate per 1/4 cup — higher than ideal, but not panic-worthy. Smaller servings, less frequent, problem mostly solved.

How much oxalate is in Nuts?

Here are the numbers: 53 mg oxalate in one 1/4 cup of Nuts (29g). Per 100 grams, that's 181 mg. Harvard T.H. Chan SPH did the lab work (2024) — these aren't database guesses.

Is Nuts low or high oxalate?

Middle of the pack. 53 mg oxalate per 1/4 cup puts Nuts in the moderate zone. Fine occasionally, not an everyday food.

What can I eat instead of Nuts?

Don't give up the whole category — just pick a safer member of it. The green foods in the related section all work as substitutes for Nuts with a fraction of the oxalate.

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.

How much Nuts is safe to eat?

The portion math: 1/4 cup = 53 mg oxalate. Half serving = ~26.5 mg. With a 100 mg daily oxalate target, 53 mg from one food eats a big chunk of your budget. Go smaller.

🔍 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.