Shiitake mushrooms are a super-food to our immune system. They contain a particular type of polysaccharide, b-Glucan, which has been shown to have an amazing effect upon immune function. Polysaccharides are large complex sugar molecules that are not broken down and utilized in the same way that simple sugars and appear to be communicators between the gut and the immune system. b-Glucans cannot be broken down by enzymes in our digestive tract so travel through our large intestine and pass across the tissues called Payers Patches. When this occurs a chain reaction is started by the Payers Patches which identify the b-Glucans as a bacterial attack and send out cytokines to recruit the correct immunological response - all that from a humble mushroom!