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🟢 Pumpkin Seed VS 🔴 Swiss Chard

Here's the straight comparison: Swiss Chard contains 293 mg oxalate per serving. Pumpkin Seed? 3 mg. That 97x gap means Swiss Chard is the clear winner for anyone tracking oxalate for kidney stone prevention.

✓ Medically Reviewed Content reviewed by OxalateWatch editorial team. Based on Harvard T.H. Chan SPH oxalate data (2024) and NKF/AUA dietary guidelines.

⚖️ Head-to-Head Comparison

🟢
Pumpkin Seed
Safe — Low Oxalate
3 mg oxalate / serving
Serving: (28 g)
Per 100 g: 0 mg oxalate
Sodium: 0 mg/100g | Calcium: 37 mg/100g | Protein: 29.9 g/100g
🔴
Swiss Chard
Avoid — High Oxalate
293 mg oxalate / serving
Serving: 1 serving (100 g)
Per 100 g: 335 mg oxalate
Sodium: 185 mg/100g | Calcium: 890 mg/100g | Protein: 27.0 g/100g

🏆 The Verdict: Choose Pumpkin Seed

At 3 mg oxalate per serving (rated Safe), Pumpkin Seed is the clear winner over Swiss Chard (293 mg, Avoid). The 97x difference comes from Harvard's 2024 lab measurements — this isn't an estimate or guess. Build your meals around Pumpkin Seed and use Swiss Chard sparingly, if at all.

🔍 Key Takeaways

**Oxalate gap:** 293 mg vs 3 mg per serving — a 97x difference. One of these is significantly easier to fit into a kidney stone diet.
**Verdicts:** Swiss Chard is rated **Avoid (100+ mg/serving)**; Pumpkin Seed is rated **Safe (under 25 mg/serving)**.
**Sodium note:** Swiss Chard has 185 mg sodium/100g, Pumpkin Seed has 0 mg. Sodium excess raises urinary calcium — another kidney stone risk factor.
**Calcium bonus:** Swiss Chard contains 890 mg calcium/100g. Dietary calcium binds oxalate in your gut, reducing how much reaches your kidneys.
**Serving strategy:** If you choose Swiss Chard, consider a half portion or pair it with a calcium source. Pumpkin Seed can be eaten more freely.

❓ Frequently Asked Questions

Which is better for kidney stones — Swiss Chard or Pumpkin Seed?

Pumpkin Seed is the clear winner. At 3 mg oxalate per serving, it's rated Safe — compared to Swiss Chard's 293 mg. That's a 97x difference. If you're managing kidney stones, Pumpkin Seed is the safer everyday choice. But Swiss Chard isn't permanently off-limits — just be aware of portions and frequency.

Can I eat Swiss Chard and Pumpkin Seed together?

It's doable, but portion size matters a lot. Together they'd run about 296 mg oxalate. Use Pumpkin Seed as your base and treat Swiss Chard as a garnish or small side — that keeps the total oxalate manageable.

How should I prepare Swiss Chard vs Pumpkin Seed differently?

Boil and drain Swiss Chard to cut oxalate. Pumpkin Seed can be prepared any way — it's already in the safe zone regardless of cooking method. If making a dish with both, prepare them separately so you can boil the higher-oxalate one.

What are good substitutes if I want to avoid Swiss Chard?

Your best bet: Pumpkin Seed. It's in the same category and has dramatically less oxalate. Check the Related Foods section on Swiss Chard's page for more specific alternatives verified by Harvard's 2024 data.

Browse all Vegetables 🟢 Low Oxalate Foods Pumpkin Seed page Swiss Chard page
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.