A study published in the New England Journal of Medicine shows that non-diabetic patients who received heavy metal chelation for lead were able to improve their kidney function or at least limit disease progression compared to controls.
Because almost everyone is exposed to lead these days, it is reasonable to investigate if a person with deteriorating kidney function does have elevated lead levels. In this study, 64 of 202 patients (more than 1 and 4 persons) were found to have elevated lead levels, and were given chelation therapy, which improved their kidney function.
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