Written by CalorieData Nutrition TeamReviewed by a Registered DietitianLast Updated: March 2026

Brussels Sprouts vs Portobello Mushroom: 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?

Portobello Mushroom is generally healthier

Portobello Mushroom comes out ahead in this comparison, winning in 3 out of 5 key nutritional categories. It has fewer calories (22 vs 43), less sugar (0.1g vs 2.2g), less sodium (6mg vs 85mg)making it the better choice for most health goals.

Quick Summary

Fewer Calories

Portobello Mushroom

22 kcal

More Protein

Brussels Sprouts

3.4g

More Fiber

Brussels Sprouts

2.4g

Less Sugar

Portobello Mushroom

0.1g

Visual Comparison

Caloriesper 100g
Brussels Sprouts
43
Portobello Mushroom
22
Proteinper 100g
Brussels Sprouts
3.4g
Portobello Mushroom
3.2g
Carbohydratesper 100g
Brussels Sprouts
9g
Portobello Mushroom
3.4g
Fatper 100g
Brussels Sprouts
0.3g
Portobello Mushroom
0.3g

Side-by-Side Nutrition Table

NutrientBrussels SproutsPortobello MushroomDifference
Calories43kcal22kcal+21.0kcal
Protein3.4g3.2g+0.2g
Carbohydrates9g3.4g+5.6g
Fat0.3g0.3g0.0g
Fiber2.4g1g+1.4g
Sugar2.2g0.1g+2.1g
Sodium85mg6mg+79.0mg

Serving Size Comparison

All values above are per 100g. Here's how they compare in common serving sizes:

Brussels Sprouts

Per 100g:43 calories
Per cup (150g):65 calories
Per serving (85g):37 calories

Portobello Mushroom

Per 100g:22 calories
Per cup (150g):33 calories
Per serving (85g):19 calories

Diet Compatibility

Brussels Sprouts

Low-CarbLow-CalorieVeganVegetarianPaleoLow-Sodium

Portobello Mushroom

Low-CarbLow-CalorieVeganVegetarianPaleoLow-Sodium

When to Choose Brussels Sprouts

  • Higher in protein (3.4g vs 3.2g)
  • More fiber (2.4g vs 1g)

Common Uses

SaladsStir-friesRoasted sidesSoups
View full Brussels Sprouts nutrition →

When to Choose Portobello Mushroom

  • Lower in calories (22 vs 43)
  • Lower in carbs (3.4g vs 9g)
  • Less sugar (0.1g vs 2.2g)
  • Lower sodium (6mg vs 85mg)

Common Uses

SaladsStir-friesRoasted sidesSoups
View full Portobello Mushroom nutrition →

Brussels Sprouts vs Portobello Mushroom: Nutritional Analysis

Brussels Sprouts is more calorie-dense at 43 calories per 100g compared to 22 for Portobello Mushroom, a difference of 21 calories. On the protein front, Brussels Sprouts delivers more with 3.4g per 100g versus 3.2g, 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 Brussels Sprouts and Portobello Mushroom tell different nutritional stories. Brussels Sprouts provides 9g of carbohydrates, 0.3g of fat, and 2.4g of fiber per 100g, while Portobello Mushroom contains 3.4g carbs, 0.3g fat, and 1g fiber. The higher fiber content in Brussels Sprouts supports digestive health, helps regulate blood sugar after meals, and contributes to longer-lasting satiety. Sugar content also differs: Brussels Sprouts contains 2.2g while Portobello Mushroom has 0.1g per 100g. Lower sugar options are generally preferable for blood sugar management and dental health.

Key Takeaways

  • For weight management: Portobello Mushroom is the lower-calorie choice at 22 cal/100g, making it more suitable for calorie-controlled diets.
  • For muscle building: Brussels Sprouts provides more protein (3.4g/100g), supporting muscle repair and growth.
  • For sustained energy: Brussels Sprouts offers more fiber (2.4g/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, Brussels Sprouts or Portobello Mushroom?

Brussels Sprouts has more calories with 43 kcal per 100g, compared to Portobello Mushroom with 22 kcal. That's a difference of 21 calories per 100g serving.

Is Brussels Sprouts healthier than Portobello Mushroom?

Based on our nutritional analysis, Portobello Mushroom is generally the healthier choice, winning in 3 out of 5 key nutritional categories. Portobello Mushroom has 22 calories, 3.2g protein, and 1g fiber per 100g. However, the best choice depends on your specific dietary goals.

What is the protein difference between Brussels Sprouts and Portobello Mushroom?

Brussels Sprouts has more protein with 3.4g per 100g, compared to Portobello Mushroom with 3.2g. Brussels Sprouts provides 0.2g more protein per 100g serving.

Which is better for weight loss, Brussels Sprouts or Portobello Mushroom?

For weight loss, Portobello Mushroom is the better choice with only 22 calories per 100g compared to 43 calories in Brussels Sprouts. Brussels Sprouts also offers 2.4g of fiber per 100g, which helps you feel fuller longer.

Does Brussels Sprouts or Portobello Mushroom have fewer carbs?

Portobello Mushroom has fewer carbs with 3.4g per 100g, compared to Brussels Sprouts with 9g. If you're following a low-carb diet, Portobello Mushroom is the better option with 5.6g fewer carbohydrates.

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.