evidence: Hulda Regehr Clark (18 October 1928 in Rosthern, Saskatchewan – 3 September 2009 in Chula Vista, California)[1][2] was a Canadian naturopath, author, and practitioner of alternative medicine. Clark claimed all human disease was related to parasitic infection, and also claimed to be able to cure all diseases, including cancer and HIV/AIDS, by "zapping" them with electrical devices which she marketed.[3] Clark wrote several books describing her methods and operated clinics in the United States. Following a string of lawsuits and eventual action by the Federal Trade Commission, she relocated to Tijuana, Mexico, where she ran the Century Nutrition clinic. [...] - Parasites: Clark said people have parasites that cause numerous problems. She described herbal and electronic methods to remove them, such as her Zapper device (see below). [...] - Zapper: A device to pulse low voltage direct current (DC) through the body at specific frequencies. Clark said this device kills viruses, bacteria and parasites. In one case, a patient with a cardiac pacemaker suffered arrhythmias as a side effect of her "Zapper".[18]