By 1980, it was estimated by Bruce Halstead, MD (Halstead 1979) that in the USA alone, there had been over 2 million applications of EDTA Chelation Therapy involving some 100 million infusions with not a single fatality. The most effective use of Chelation Therapy, over the 30 years of its successful application, has been consistently found to be related to those diseases in which heavy metal or calcium deposits were major factors. When administered according to strict protocols and guidelines, Chelation therapy is extremely safe and can be tremendously beneficial.