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

Olive oil, extra virgin

🟢 Safe — Low Oxalate
0 mg oxalate / serving
Serving: 1 tbsp (14 g) | Per 100 g: 0 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

0 mg
Oxalate / serving
Low Oxalate
Sodium / 100g
Pending
Protein / 100g
Pending
Calcium / 100g
Pending

📏 Oxalate by Serving Size

ServingWeightOxalateVerdict
1 tbsp14 g0 mg Safe
2 x 1 tbsp28 g0 mg Safe
½ x 1 tbsp7 g0 mg Safe

🏷️ Tags

Beverages 🟢 Oxalate Safe Low Oxalate Plant-Based

🟢 See all Beverages rated Safe for kidney stones →

🔗 Related Foods

❓ Frequently Asked Questions

Is Olive oil safe for kidney stones?

Short answer: yes. Longer answer: at 0 mg per 1 tbsp, Olive oil is one of the safer things you can eat if you're watching oxalate. Harvard T.H. Chan SPH measured this directly.

How much oxalate is in Olive oil?

One 1 tbsp of Olive oil = 0 mg oxalate. Scale it up to 100g and you're at 0 mg. Direct measurement from Harvard, 2024. About as reliable as food data gets.

Is Olive oil a high-oxalate food?

It's low. 0 mg per 1 tbsp is well under the 25 mg danger line. Olive oil is not the food you need to worry about.

What can I eat instead of Olive oil?

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

How reliable is the data for Olive oil?

The oxalate number for Olive oil — 0 mg per serving — is from Harvard's 2024 lab analysis. That part is solid. The USDA nutrition data (sodium, protein, calcium) is still being matched — we'll update when it's available.

Is Olive oil a good drink for kidney stones?

For beverages, 0 mg oxalate per serving puts Olive oil in the safe category. Most of your daily fluids should still be water. This one's an occasional drink, not your hydration strategy.

🔍 Explore More About This Food

📚 Data Sources

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

📖 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.