Holy Shiitake - Why would a health advocate promote fast food?

The mushroom is a “fast” food that is a great source of Lentinan - which studies suggest activates tumor-fighting T cells in our bodies. Mushrooms also contain lean protein, and they are rich in calcium, iron, potassium, copper and selenium (which is very good for bones, teeth, nails, and hair). Mushrooms are the best choice for vegetarians to obtain selenium and the mushroom is also the only veggie that contains an edible form of vitamin D (a natural antidepressant). A mushroom is shaped like a shield or umbrella and, ironically, it shields our bodies from bacteria, cancer, aging and other illness. What an interesting fast food.