The Cure for All Diseases by Hulda Clark, Ph.D., N.D. reveals that parasites, bacteria and viruses play an important role, often a causative role, in all pathology. These pathogens are attracted to metals and chemicals which complete the chain of pathology. In order to break the chain of pathology we must get the metals out of our mouth, clean up our chemical act and kill parasites, bacteria and viruses.

Hulda Clark is not the only one to have noticed the important role that parasites play in human pathology. The literature is replete with books on the subject. However, she has created incredible interest in the subject because of her broad approach to the matter of toxicity and pathology and because of her development of an experimental electronic device for killing pathogens.

In her book, Hulda Clark describes an experimental electronic device that kills parasites and other single-celled and multi-celled pathogens. She calls this device, "The Zapper".