"After a century and a half of research, studies have shown that Beta Glucans act as immunomodulator agents, meaning they trigger a cascade of events that help regulate the immune system, making it more efficient. Specifically, Beta Glucans stimulate the activity of macrophages, which are versatile immune cells that ingest and stimulate other immune cells. Macrophages also release cytokines, chemicals that when secreted enable the immune cells to communicate with one another.
In addition, Beta Glucans stimulate lethal white blood cells white blood cells (lymphocytes) that support the immune system."*
-Source: LifeExtention.com - The Immune Enhancing Benefits of Beta Glucans