"Shiitake" (Lentinula edodes) is an edible mushroom naturally rich in polysaccharides, sterols, and beta-glucans. Constituents like these help support immune activity, circulatory efficiency, and oxidative balance. Shiitake also provides essential nutrients, including B vitamins, copper, and selenium, which support metabolic processes. Sun-dried varieties serve as a plant-based source of vitamin D, adding to its nutritional profile. Long used in soups, broths, and tonics, shiitake remains a key ingredient in both traditional diets and herbal preparations.