Rung Five
Myths and everyday exposures
Unclear

Chelation therapy for cancer

EDTA drips and "heavy metal detox". Claimed cures.

Also called or includes: EDTA chelation, Heavy metal detoxification

Safety: Intravenous EDTA can drop blood calcium dangerously: a woman with no sign of metal poisoning and a 5-year-old boy treated for autism died after it in the United States.
Verdict
UnclearThere isn't enough human evidence to say either way.
How sure
Rung 1 · UnprovenLab or animal data only, or never directly tested in people.

The rung shows how sure the science is, not how big the effect is. How to read these ratings

Cancers affected

None

What the evidence shows

Chelation drugs are approved for proven heavy metal poisoning, such as lead. Poison Control notes it is also offered for cancer and other diseases without approval or evidence.

What to do

Don't have chelation unless a doctor has diagnosed heavy metal poisoning.

Sources

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Related

Every myth and exposure we rated, or follow one cancer step by step: breast cancer, colorectal cancer, lung cancer and prostate cancer.