Our immune system is made up of macrophage like the activated one below. A chemical process occurs within the body to turn them on. Once activated they go around and clean out the body from viruses (infectious disease), bacteria, and cancer. When a person has ongoing inflammation etc., the macrophage is blocked from activating. This has to do with the secretion of Nagalase during tumor invasion and viral infection. It is by design so the host can be effectively disarmed. However, there is a way to turn them on even in the presence of such an overwhelming attack on the system, which is a supplement called GcMAF < it also occurs naturally in the body. It is the chemical that Nagalase neutralizes to obstruct macrophage activation.