Mushrooms are a low-calorie food usually eaten raw or cooked to provide garnish to a meal. Raw dietary mushrooms are a good source of B vitamins and the essential minerals, selenium, copper and potassium. Fat, carbohydrate and calorie content are low, with absence of vitamin C and sodium. Mushrooms are source of quality protein having essential amino acids and high digestibility. No cholesterol and low fat with ergosterol and polyunsaturated fatty acids : Good for Heart.