Chelation therapy is a medical treatment that involves the administration of chelating agents to remove heavy metals and other toxic substances from the body. These chelating agents bind to metals and form complexes that can be excreted from the body through urine or feces. Chelation therapy is used to treat heavy metal poisoning, such as lead or mercury poisoning, as well as other conditions like heart disease and atherosclerosis. This therapy has been a topic of research and controversy, with some studies showing potential benefits in certain conditions while others questioning its efficacy and safety.