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

Squash, Winter & Summer, Raw

🟢 Safe — Low Oxalate
6 mg oxalate / serving
Serving: 1 cup, sliced (150 g) | Per 100 g: 4 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

6 mg
Oxalate / serving
Low Oxalate
0 mg
Sodium / 100g
Low Na
1.1 g
Protein / 100g
Tier 1
21 mg
Calcium / 100g
Tier 1

📏 Oxalate by Serving Size

ServingWeightOxalateVerdict
1 cup, sliced150 g6 mg Safe
2 x 1 cup, sliced300 g12 mg Safe
½ x 1 cup, sliced75 g3 mg Safe

🏷️ Tags

Vegetables 🟢 Oxalate Safe Low Oxalate Plant-Based

🟢 See all Vegetables rated Safe for kidney stones →

⚖️ Compare this food: · vs Good King Henry · vs Taro Leaves

🔗 Related Foods

❓ Frequently Asked Questions

Is Squash safe for kidney stones?

Yep, you're good. Squash clocks in at 6 mg oxalate per 1 cup, sliced — way under the 25 mg cutoff. Eat it without the stress. Measured by Harvard, not guessed.

What's the oxalate content of Squash?

Here are the numbers: 6 mg oxalate in one 1 cup, sliced of Squash (150g). Per 100 grams, that's 4 mg. Harvard T.H. Chan SPH did the lab work (2024) — these aren't database guesses.

Is Squash low or high oxalate?

Low. 6 mg per 1 cup, sliced puts Squash firmly in the low-oxalate category. Safe for regular eating if you're managing kidney stones.

What are the best low-oxalate alternatives to Squash?

Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as Squash. Grab one of those and you dodge the oxalate while keeping similar flavors.

How much sodium does Squash have?

0 mg sodium per 100g in Squash. Well under the 460 mg threshold. One less thing on your kidney stone checklist.

🔍 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.