Chelation therapy has been recommended by some for the treatment of MS. Since 1955, some proponents have advocated its use for heart disease because it can presumably remove calcium from the harmful plaques on blood vessels. Chelation therapy also has been recommended for people with strokes, Parkinson's disease, Alzheimer's disease, muscular dystrophy, heart disease, narrowing of peripheral blood vessels (peripheral vascular disease), cancer, and arthritis.
The only clear indication for chelation therapy is heavy-metal poisoning. Limited studies have suggested a possible benefit for stroke—further studies are needed in this area. No well-designed studies support the use of chelation therapy for MS, and studies in heart disease and peripheral vascular disease have shown no clear benefit for chelation therapy.
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