GcMAF is made naturally by your body and acts to spur anti-cancer immune activity, activating very large cells, known as macrophages. These macrophages track down and kill cancer cells and sometimes, viruses. Cancer cells have adopted a means for blocking the production of GcMAF by manufacturing nagalase. A large number of the holistic "dead doctors" were saying that nagalase molecules are being injected into people via vaccines, thereby compromising the populations immune systems, accounting for the growing rates of cancer and other diseases. https://www.naturalnews.com/050582_nagalase_GcMAF_cancer_industry_profits.html https://www.cancertutor.com/gcmaf-potential-cure/