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

Seeds, Chia, Bob's Red Mill

🟡 Caution — Moderate
61 mg oxalate / serving
Serving: (13 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.

Chia seeds are a cautionary tale in 'health food' assumptions. 61 mg oxalate per serving — solidly in the Caution zone, despite their reputation as a superfood. They're rich in omega-3s, fiber, and protein, which is why they're in every smoothie bowl on Instagram. But for kidney stone patients, the oxalate content is real. If you use chia seeds, use them sparingly — a teaspoon in oatmeal, not a quarter-cup in a smoothie. Flax seeds are a lower-oxalate alternative with similar nutritional benefits.

📊 Nutrition at a Glance

61 mg
Oxalate / serving
Moderate
Sodium / 100g
Pending
Protein / 100g
Pending
Calcium / 100g
Pending

📏 Oxalate by Serving Size

ServingWeightOxalateVerdict
13 g61 mg Caution
2 x 26 g122 mg Avoid
½ x 6 g30.5 mg Caution

🏷️ Tags

Nuts & Seeds Plant-Based Moderate Oxalate 🟡 Oxalate Caution

🟡 See all Nuts & Seeds rated Caution for kidney stones →

🔗 Related Foods

❓ Frequently Asked Questions

Is Seeds safe for kidney stones?

Awareness over avoidance. Seeds has 61 mg oxalate per — higher than ideal, but not panic-worthy. Smaller servings, less frequent, problem mostly solved.

How much oxalate is in Seeds?

The exact figure: 61 mg of oxalate per of Seeds. Works out to 0 mg/100g. This is the number kidney stone patients actually need. Harvard (2024) verified.

Is Seeds high in oxalates?

Moderate. Seeds has 61 mg oxalate per — not high enough to panic, not low enough to ignore. Portions matter with this one.

What are the best low-oxalate alternatives to Seeds?

Plenty of options. Scroll down to Related Foods — every 🟢 green item there is a lower-oxalate alternative to Seeds. Same food group, way less oxalate.

How much Seeds is safe to eat?

Think garnish, not main dish. Seeds at 61 mg per is a lot for one food. Use smaller amounts spread across meals or as a flavor accent rather than the centerpiece.

How reliable is the data for Seeds?

The oxalate number for Seeds — 61 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.

🔍 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.