Is Grain Safe for Kidney Stones? | Safe

Q: Can I eat Grain with kidney stones?

Yep, you're good. Grain clocks in at 3 mg oxalate per 1/4 cup — way under the 25 mg cutoff. Eat it without the stress. Measured by Harvard, not guessed.

Q: How much oxalate is in Grain?

Here are the numbers: 3 mg oxalate in one 1/4 cup of Grain (38g). Per 100 grams, that's 7 mg. Harvard T.H. Chan SPH did the lab work (2024) — these aren't database guesses.

Q: Is Grain a high-oxalate food?

It's low. 3 mg per 1/4 cup is well under the 25 mg danger line. Grain is not the food you need to worry about.

Q: What can I eat instead of Grain?

There are almost always safer swaps in the same food family. For Grain, check the related foods section below — the green-marked ones are your best bets. All verified by Harvard (2024).

Q: How much sodium does Grain 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.

🟢 Safe
Oxalate <25 mg/serving

🟡 Caution
Oxalate 25-99 mg/serving

🔴 Avoid
Oxalate ≥100 mg/serving

✓ 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

3 mg

Oxalate / serving

Low Oxalate

0 mg

Sodium / 100g

Low Na

11.1 g

Protein / 100g

Tier 1

13 mg

Calcium / 100g

Tier 1

📏 Oxalate by Serving Size

Serving	Weight	Oxalate	Verdict
1/4 cup	38 g	3 mg	Safe
2 x 1/4 cup	76 g	6 mg	Safe
½ x 1/4 cup	19 g	1.5 mg	Safe

🏷️ Tags

🟢 See all Grains & Pasta rated Safe for kidney stones →

🔗 Related Foods

❓ Frequently Asked Questions

Can I eat Grain with kidney stones?

Yep, you're good. Grain clocks in at 3 mg oxalate per 1/4 cup — way under the 25 mg cutoff. Eat it without the stress. Measured by Harvard, not guessed.

How much oxalate is in Grain?

Here are the numbers: 3 mg oxalate in one 1/4 cup of Grain (38g). Per 100 grams, that's 7 mg. Harvard T.H. Chan SPH did the lab work (2024) — these aren't database guesses.

Is Grain a high-oxalate food?

It's low. 3 mg per 1/4 cup is well under the 25 mg danger line. Grain is not the food you need to worry about.

What can I eat instead of Grain?

There are almost always safer swaps in the same food family. For Grain, check the related foods section below — the green-marked ones are your best bets. All verified by Harvard (2024).

How much sodium does Grain 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

🟢See our detailed safety analysis for this food 📊Exact oxalate numbers: how much is in a serving 📋Low, moderate, or high oxalate? Full breakdown 🧂How much sodium? Kidney stone risk check

📚 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.

Grain, Polenta, organic, De la Estancia