Like most mushrooms, white mushrooms are low in calories but pack plenty of nutrients.
One cup (96 grams) of whole white mushrooms provides (5Trusted Source):
Calories: 21
Carbs: 3 grams
Fiber: 1 gram
Protein: 3 grams
Fat: 0 grams
Vitamin D: 33% of the Daily Value (DV)
Selenium: 16% of the DV
Phosphorus: 12% of the DV
Folate: 4% of the DV
Supplier: Micro green button mushroom