Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
Mushrooms are a pleasant surprise for anyone tracking oxalate: about 1 mg per half-cup, essentially zero. White button, cremini, portobello, shiitake, and oyster mushrooms are all similarly low. They add umami depth to dishes without adding oxalate — sauté them as a side, add to omelettes, stir into pasta, or use portobello caps as a burger alternative. Stick with cultivated varieties from the grocery store and you're in completely safe territory. Mushrooms are also low-calorie and provide B vitamins and selenium.
📊 Nutrition at a Glance
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 1 cup sliced | 70 g | 1 mg | Safe |
| 2 x 1 cup sliced | 140 g | 2 mg | Safe |
| ½ x 1 cup sliced | 35 g | 0.5 mg | Safe |
🏷️ Tags
🟢 See all Vegetables rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Should I avoid Mushrooms if I have kidney stones?
Don't overthink this one. Mushrooms has 1 mg oxalate per 1 cup sliced. That's solidly safe territory for kidney stones. The number is from Harvard's latest lab work.
What's the oxalate content of Mushrooms?
1 mg — that's the oxalate in a standard 1 cup sliced of Mushrooms. For the 100g comparison freaks: 0 mg. Source is Harvard's 2024 food analysis project.
Is Mushrooms a high-oxalate food?
It's low. 1 mg per 1 cup sliced is well under the 25 mg danger line. Mushrooms is not the food you need to worry about.
What are the best low-oxalate alternatives to Mushrooms?
Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as Mushrooms. Grab one of those and you dodge the oxalate while keeping similar flavors.
How reliable is the data for Mushrooms?
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.