In this clip from Dr. Group, he explains the body toxins from microbes and parasites. Every person that we tested for cancer, was overgrown with candida, yeast, fungus, and mycoplasmas. The definition of a parasite is any harmful organism that lives off a host organism (bacteria, virus, fungus, etc.) They take your nutrients and go to the bathroom in your system. They excrete compounds that keep your body acidic. A body free of disease will be alkaline and a body prone to sickness and disease will be acidic.