Beta-glucans are known as "biological response modifiers" because of their ability to activate the immune system.Immunologists at the University of Louisville, discovered that a receptor on the surface of innate immune cells called Complement Receptor 3 (CR3 or CD11b/CD18) is responsible for binding to beta-glucans, allowing the immune cells to recognize them as "non-self." However, it should be noted that the activity of beta-glucans is different from some pharmaceutical drugs which have the ability to over-stimulate the immune system. Pharmaceutical drugs have the potential to push the immune system to over-stimulation, and hence are contraindicated in individuals with autoimmune diseases, allergies, or yeast infections. Beta-glucans seem to make the immune system work better without becoming overactive. In addition to enhancing the activity of the immune system, beta-glucans also reportedly lower elevated levels of LDL cholesterol, aid in wound healing, help prevent infections, and have potential as an adjuvant in the treatment of cancer.
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