I was reading an article online about mushrooms and did you know that they are a great source of fiber, Vitamin D, protein, Vitamin B, copper, phosphorous, magnesium, potassium and zinc? The fiber helps lower cholesterol while Vitamin D helps with the absorption of Calcium. Mushrooms are 20-30 percent protein and 70-90 percent water, meaning you get the protein from meat with the calories of vegetables. Also the Vitamin B they hold are only found in meats, which makes it great for vegetarians. The article just went on and on about how nutritious they were.