21. Janson estimated that 2, 500 doctors in the United States offer chelation therapy. 22. Gold toxicity can be ameliorated with chelation therapy with an agent such as dimercaprol. 23. Chelation therapy is administered under very careful medical supervision due to various inherent risks.24. When the therapy is administered properly, the chelation drugs have significant side effects. 25. The only way to remove lead from the blood is through a treatment called chelation . 26. In the US, an estimated 500, 000 people undergo Chelation Therapy every year. 27. Chelation Therapy requires 20 to 30 treatments.28. In all, 84 heart patients were randomly assigned to get chelation or dummy injections. 29. Robertson advised _ or enter the study instead of seeking chelation elsewhere . _ _= 30. This binds copper ( chelation ) and leads to excretion of copper in the urine.