This edible mushroom has been prized for its tonic and therapeutic value for thousands of years. It is used to reduce cholesterol and to fortify the immune system. Shitake contains polysaccharides, including the all-important Beta-1,3-D-glucan, which powerfully activates the human immune system. It has been shown tohave antiviral, antibacterial, anti-parasitic and liver protective qualities.Scientific research has demonstrated that Shitake has significant antitumoreffects. Shitake has also been shown to have cardiovascular benefits, includingthe ability to lower blood pressure. Shitake helps lower elevated sugar levels and promotes urination.