Oyster Mushroom vs Spirulina: Nutrition Comparison
Which is healthier? Compare calories, protein, carbs, and more
Complete side-by-side nutrition comparison per 100g serving | Updated 2026
Which is Healthier?
Oyster Mushroom is generally healthier
Oyster Mushroom comes out ahead in this comparison, winning in 3 out of 5 key nutritional categories. It has fewer calories (33 vs 290), less sugar (0.4g vs 2g), less sodium (108mg vs 1048mg)making it the better choice for most health goals.
Quick Summary
Fewer Calories
Oyster Mushroom
33 kcal
More Protein
Spirulina
57g
More Fiber
Spirulina
3.6g
Less Sugar
Oyster Mushroom
0.4g
Visual Comparison
Side-by-Side Nutrition Table
| Nutrient | Oyster Mushroom | Spirulina | Difference |
|---|---|---|---|
| Calories | 33kcal✓ | 290kcal | -257.0kcal |
| Protein | 3.3g | 57g✓ | -53.7g |
| Carbohydrates | 6g✓ | 24g | -18.0g |
| Fat | 0.4g✓ | 7g | -6.6g |
| Fiber | 1.1g | 3.6g✓ | -2.5g |
| Sugar | 0.4g✓ | 2g | -1.6g |
| Sodium | 108mg✓ | 1048mg | -940.0mg |
Serving Size Comparison
All values above are per 100g. Here's how they compare in common serving sizes:
Oyster Mushroom
Spirulina
Diet Compatibility
Oyster Mushroom
Spirulina
When to Choose Oyster Mushroom
- ✓Lower in calories (33 vs 290)
- ✓Lower in carbs (6g vs 24g)
- ✓Less sugar (0.4g vs 2g)
- ✓Lower sodium (108mg vs 1048mg)
Common Uses
When to Choose Spirulina
- ✓Higher in protein (57g vs 3.3g)
- ✓More fiber (3.6g vs 1.1g)
Common Uses
Oyster Mushroom vs Spirulina: Nutritional Analysis
Spirulina is more calorie-dense at 290 calories per 100g compared to 33 for Oyster Mushroom, a difference of 257 calories. On the protein front, Spirulina delivers more with 57g per 100g versus 3.3g, which matters for muscle maintenance, satiety, and overall metabolic health. These differences become meaningful when you consider how each food fits into your daily dietary pattern rather than looking at any single nutrient in isolation.
Macronutrient Breakdown
The macronutrient profiles of Oyster Mushroom and Spirulina tell different nutritional stories. Oyster Mushroom provides 6g of carbohydrates, 0.4g of fat, and 1.1g of fiber per 100g, while Spirulina contains 24g carbs, 7g fat, and 3.6g fiber. The higher fiber content in Spirulina supports digestive health, helps regulate blood sugar after meals, and contributes to longer-lasting satiety. Sugar content also differs: Oyster Mushroom contains 0.4g while Spirulina has 2g per 100g. Lower sugar options are generally preferable for blood sugar management and dental health.
Key Takeaways
- For weight management: Oyster Mushroom is the lower-calorie choice at 33 cal/100g, making it more suitable for calorie-controlled diets.
- For muscle building: Spirulina provides more protein (57g/100g), supporting muscle repair and growth.
- For sustained energy: Spirulina offers more fiber (3.6g/100g), which slows digestion and provides steadier energy release.
- Overall: Neither food is universally "better" than the other. The right choice depends on your specific nutritional goals, meal context, and dietary preferences. Both can play a role in a balanced diet.
Frequently Asked Questions
Which has more calories, Oyster Mushroom or Spirulina?
Spirulina has more calories with 290 kcal per 100g, compared to Oyster Mushroom with 33 kcal. That's a difference of 257 calories per 100g serving.
Is Oyster Mushroom healthier than Spirulina?
Based on our nutritional analysis, Oyster Mushroom is generally the healthier choice, winning in 3 out of 5 key nutritional categories. Oyster Mushroom has 33 calories, 3.3g protein, and 1.1g fiber per 100g. However, the best choice depends on your specific dietary goals.
What is the protein difference between Oyster Mushroom and Spirulina?
Spirulina has more protein with 57g per 100g, compared to Oyster Mushroom with 3.3g. Spirulina provides 53.7g more protein per 100g serving.
Which is better for weight loss, Oyster Mushroom or Spirulina?
For weight loss, Oyster Mushroom is the better choice with only 33 calories per 100g compared to 290 calories in Spirulina. Spirulina also offers 3.6g of fiber per 100g, which helps you feel fuller longer.
Does Oyster Mushroom or Spirulina have fewer carbs?
Oyster Mushroom has fewer carbs with 6g per 100g, compared to Spirulina with 24g. If you're following a low-carb diet, Oyster Mushroom is the better option with 18.0g fewer carbohydrates.
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About Our Data
All nutrition data in this comparison is sourced from the USDA FoodData Central, the official food composition database maintained by the U.S. Department of Agriculture. Values are based on 100g servings for accurate comparison.
Health Disclaimer: This comparison is for informational purposes only and is not intended as medical or dietary advice. Nutritional needs vary by individual. The best food choice depends on your personal health goals, dietary requirements, and preferences. Consult a healthcare provider or registered dietitian for personalized nutrition guidance.