Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
📊 Nutrition at a Glance
How the form changes the number: preparation is the real variable across this family. Boiling leaches a meaningful share of soluble oxalate into the cooking water — commonly 30-50% for plant foods — while raw and dry-heat forms keep essentially all of it, so the same base food can land in different brackets depending on how it is cooked. This page tracks Nori Seaweed at 10 mg per serving, in the middle of the family range. Related forms in this family: Agar Seaweed (1 mg), Dulse flakes Seaweed (14 mg), Wakame Seaweed (0 mg).
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 1/2 cup | 10 g | 10 mg | Low Oxalate |
| 2 x 1/2 cup | 20 g | 20 mg | Low Oxalate |
| ½ x 1/2 cup | 5 g | 5 mg | Low Oxalate |
🏷️ Tags
🟢 See all Vegetables rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Can I eat Seaweed with kidney stones?
Safe pick. 10 mg oxalate per 1/2 cup means Seaweed is comfortably in the green zone. Harvard's 2024 lab data says so. No need to track this one obsessively.
How much oxalate is in Seaweed?
Here are the numbers: 10 mg oxalate in one 1/2 cup of Seaweed (10g). Per 100 grams, that's 97 mg. Harvard T.H. Chan SPH did the lab work (2024) — these aren't database guesses.
Is Seaweed high in oxalates?
Definitely low. 10 mg oxalate per 1/2 cup. That's the green zone. No restrictions needed for this food.
What are the best low-oxalate alternatives to Seaweed?
The easiest move: swap Seaweed 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 Seaweed?
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.