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

Soup, Spicy Black Bean and Kale

🟡 Caution — Moderate
29 mg oxalate / serving
Serving: 1 cup (246 g) | Per 100 g: 12 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

29 mg
Oxalate / serving
Moderate
970 mg
Sodium / 100g
High Na
4.8 g
Protein / 100g
Tier 1
35 mg
Calcium / 100g
Tier 1

🚨 High Sodium Alert

Soup contains 970 mg sodium per 100g — well above the recommended limit for kidney stone patients. High sodium intake can increase calcium in urine, raising stone risk.

📏 Oxalate by Serving Size

ServingWeightOxalateVerdict
1 cup246 g29 mg Caution
2 x 1 cup492 g58 mg Caution
½ x 1 cup123 g14.5 mg Safe

🏷️ Tags

Vegetables Plant-Based Moderate Oxalate 🟡 Oxalate Caution High Sodium

🟡 See all Vegetables rated Caution for kidney stones →

⚖️ Compare this food: · vs Mushrooms · vs Radicchio

🔗 Related Foods

❓ Frequently Asked Questions

Can I eat Soup with kidney stones?

Awareness over avoidance. Soup has 29 mg oxalate per 1 cup — higher than ideal, but not panic-worthy. Smaller servings, less frequent, problem mostly solved.

How much oxalate is in Soup?

One 1 cup of Soup = 29 mg oxalate. Scale it up to 100g and you're at 12 mg. Direct measurement from Harvard, 2024. About as reliable as food data gets.

Is Soup high in oxalates?

Moderate. Soup has 29 mg oxalate per 1 cup — not high enough to panic, not low enough to ignore. Portions matter with this one.

What can I eat instead of Soup?

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 Soup. Pick from those.

How much Soup is safe to eat?

The portion math: 1 cup = 29 mg oxalate. Half serving = ~14.5 mg. With a 100 mg daily oxalate target, 29 mg from one food eats a big chunk of your budget. Go smaller.

Is Soup high in sodium?

Don't just look at oxalate. Soup has 970 mg sodium/100g on top of whatever oxalate it carries. Double-tap on your kidneys. Minimize salt elsewhere if you eat this.

🔍 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.