Mushrooms are edible fungus that can provide several important nutrients. The many kinds of mushroom have varying compositions and nutritional profiles

Mushrooms contain protein, vitamins, minerals, and antioxidants. These can have various health benefits

Other benefits
Mushrooms are rich in B vitamins, such as:

riboflavin, or B-2
folate, or B-9
thiamine, or B-1
pantothenic acid, or B-5
niacin, or B-3
B vitamins help the body get energy from food and form red blood cells. A number of B vitamins also appear to be important for a healthy brain.

The choline in mushrooms can help with muscle movement, learning, and memory. Choline assists in maintaining the structure of cellular membranes and plays a role in the transmission of nerve impulses.

Mushrooms are also the only vegan, nonfortified dietary source of vitamin D.

Several other minerals that may be difficult to obtain from a vegan diet — such as selenium, potassium, copper, iron, and phosphorus — are available in mushrooms