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🟢 Lettuce, variety VS 🟡 Bitter Gourd (Bitter Melon)

If you're trying to decide between Lettuce, variety and Bitter Gourd (Bitter Melon) for a kidney stone diet, the numbers tell a clear story. Lettuce, variety has 3 mg oxalate vs Bitter Gourd (Bitter Melon)'s 80 mg — that's a 26x difference measured by Harvard's lab.

✓ 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

🟢
Lettuce, variety
Safe — Low Oxalate
3 mg oxalate / serving
Serving: 1 cup, shredded (56 g)
Per 100 g: 5 mg oxalate
Sodium: 16 mg/100g | Calcium: 14 mg/100g | Protein: 0.7 g/100g
🟡
Bitter Gourd (Bitter Melon)
Caution — Moderate Oxalate
80 mg oxalate / serving
Serving: 1 cup (93 g)
Per 100 g: 86 mg oxalate
Sodium: 5 mg/100g | Calcium: 19 mg/100g | Protein: 1.0 g/100g

🏆 The Verdict: Choose Lettuce, variety

At 3 mg oxalate per serving (rated Safe), Lettuce, variety is the clear winner over Bitter Gourd (Bitter Melon) (80 mg, Caution). The 26x difference comes from Harvard's 2024 lab measurements — this isn't an estimate or guess. Build your meals around Lettuce, variety and use Bitter Gourd (Bitter Melon) sparingly, if at all.

🔍 Key Takeaways

**Oxalate gap:** 3 mg vs 80 mg per serving — a 26x difference. One of these is significantly easier to fit into a kidney stone diet.
**Verdicts:** Lettuce, variety is rated **Safe (under 25 mg/serving)**; Bitter Gourd (Bitter Melon) is rated **Caution (25-99 mg/serving)**.
**Sodium note:** Lettuce, variety has 16 mg sodium/100g, Bitter Gourd (Bitter Melon) has 5 mg. Sodium excess raises urinary calcium — another kidney stone risk factor.
**Serving strategy:** If you choose Bitter Gourd (Bitter Melon), consider a half portion or pair it with a calcium source. Lettuce, variety can be eaten more freely.
**Cooking tip:** For either vegetable, boiling and discarding the cooking water can reduce soluble oxalate by 30-50%. Steaming or eating raw preserves more oxalate.

❓ Frequently Asked Questions

Which is better for kidney stones — Lettuce, variety or Bitter Gourd (Bitter Melon)?

Lettuce, variety is the clear winner. At 3 mg oxalate per serving, it's rated Safe — compared to Bitter Gourd (Bitter Melon)'s 80 mg. That's a 26x difference. If you're managing kidney stones, Lettuce, variety is the safer everyday choice. But Bitter Gourd (Bitter Melon) isn't permanently off-limits — just be aware of portions and frequency.

Can I eat Lettuce, variety and Bitter Gourd (Bitter Melon) together?

You can, but be aware of the math. Together they'd total about 83 mg oxalate — which is in Caution territory. If both are in one meal, the oxalate load adds up. Better strategy: make Lettuce, variety the main component and use Bitter Gourd (Bitter Melon) sparingly.

How should I prepare Lettuce, variety vs Bitter Gourd (Bitter Melon) differently?

For Bitter Gourd (Bitter Melon), boiling and draining cuts oxalate by 30-50%. Steaming preserves more. For Lettuce, variety, preparation method matters less — it's already low-oxalate. If you're cooking both, boil Bitter Gourd (Bitter Melon) separately and discard the water.

What are good substitutes if I want to avoid Bitter Gourd (Bitter Melon)?

Your best bet: Lettuce, variety. It's in the same category and has dramatically less oxalate. Check the Related Foods section on Bitter Gourd (Bitter Melon)'s page for more specific alternatives verified by Harvard's 2024 data.

Browse all Vegetables 🟢 Low Oxalate Foods Lettuce, variety page Bitter Gourd (Bitter Melon) 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.