Ask the doctor: Is chelation therapy an effective way to stave off heart disease?

Q. I have heard that something called chelation therapy can help protect against heart disease. Can you tell me about that?

A. Chelation (pronounced keel-A-shun) therapy uses chemicals that attach to metals deposited in body tissue to pull the metals out of the tissue and into the blood. Then the metals get eliminated in your urine. Chelation therapy is a successful treatment for lead poisoning, for example. But you may wonder what that has to do with heart disease.

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