๐ŸŸข Safe
Oxalate <25 mg/serving
๐ŸŸก Caution
Oxalate 25-99 mg/serving
๐Ÿ”ด Avoid
Oxalate โ‰ฅ100 mg/serving
๐ŸŸก

Flour, Soy, Arrowhead Mills

๐ŸŸก Caution โ€” Moderate
28 mg oxalate / serving
Serving: 1/4 cup (21 g) | Per 100 g: 135 mg
โœ“ Medically Reviewed Content reviewed by OxalateWatch Editorial Team. Based on Harvard T.H. Chan SPH oxalate data (2024) and NKF/AUA dietary guidelines.

๐Ÿ“Š Nutrition at a Glance

28 mg
Oxalate / serving
Moderate
โ€”
Sodium / 100g
Pending
โ€”
Protein / 100g
Pending
โ€”
Calcium / 100g
Pending

๐Ÿ“ Oxalate by Serving Size

ServingWeightOxalateVerdict
1/4 cup21 g28 mg Caution
2 x 1/4 cup42 g56 mg Caution
ยฝ x 1/4 cup10 g14 mg Safe

๐Ÿท๏ธ Tags

Legumes Plant-Based Moderate Oxalate ๐ŸŸก Oxalate Caution Calcium-Rich

๐ŸŸก See all Legumes rated Caution for kidney stones โ†’

โš–๏ธ Compare this food: ยท vs Tofu ยท vs Flour โ†’

๐Ÿ”— Related Foods

โ“ Frequently Asked Questions

Is Flour safe for kidney stones?

Proceed, but with awareness. Flour delivers 28 mg oxalate per 1/4 cup. That's moderate โ€” above the safe line, below the danger line. Portion size is your friend here.

How much oxalate is in Flour?

28 mg โ€” that's the oxalate in a standard 1/4 cup of Flour. For the 100g comparison freaks: 135 mg. Source is Harvard's 2024 food analysis project.

Is Flour low or high oxalate?

Middle of the pack. 28 mg oxalate per 1/4 cup puts Flour in the moderate zone. Fine occasionally, not an everyday food.

What are the best low-oxalate alternatives to Flour?

The easiest move: swap Flour for any ๐ŸŸข Safe food in the related foods grid. They're all under 25 mg per serving and verified by Harvard's 2024 data. Problem solved.

How reliable is the data for Flour?

The oxalate number for Flour โ€” 28 mg per serving โ€” is from Harvard's 2024 lab analysis. That part is solid. The USDA nutrition data (sodium, protein, calcium) is still being matched โ€” we'll update when it's available.

How much Flour is safe to eat?

Size matters. 1/4 cup of Flour = 28 mg. Cut it in half, you're at roughly 14 mg. If you love this food, the half-portion strategy is your best compromise.

๐Ÿ” Explore More About This Food

๐Ÿ“š Data Sources

Oxalate: Harvard T.H. Chan School of Public Health (2024) via OHF.

๐Ÿ“– 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.