Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
📊 Nutrition at a Glance
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 1 cup shredded | 72 g | 1 mg | Safe |
| 2 x 1 cup shredded | 144 g | 2 mg | Safe |
| ½ x 1 cup shredded | 36 g | 0.5 mg | Safe |
🏷️ Tags
🟢 See all Vegetables rated Safe for kidney stones →
⚖️ Compare this food: · vs Okra · vs Sweet potato →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Can I eat Lettuce with kidney stones?
Short answer: yes. Longer answer: at 1 mg per 1 cup shredded, Lettuce is one of the safer things you can eat if you're watching oxalate. Harvard T.H. Chan SPH measured this directly.
What's the oxalate content of Lettuce?
One 1 cup shredded of Lettuce = 1 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 Lettuce a high-oxalate food?
Nope. Lettuce is a low-oxalate food — just 1 mg per 1 cup shredded. Well under the 25 mg cutoff. You're in the clear with this one.
What are the best low-oxalate alternatives to Lettuce?
The easiest move: swap Lettuce for any 🟢 Safe food in the related foods grid. They're all under 25 mg per serving and verified by Harvard's 2024 data. Problem solved.
How reliable is the data for Lettuce?
Oxalate: very reliable (Harvard 2024 lab measurement). Other nutrients: still being matched to USDA data. The oxalate figure is what matters for a kidney stone decision, and that one's solid.