Chelation therapy is a series of intravenous infusions containing EDTA and various other substances. It is falsely claimed to be effective against cardiovascular disease, autism, and many other diseases and conditions. Because chelation has valid use in some cases of heavy metal poisoning, many practitioners falsely diagnose lead, mercury, or other heavy metal toxicity to trick patients into undergoing chelation. The articles linked from this page explain why doctors who advocate the general use of chelation therapy should be avoided.