METALLOPATHY Evidence on heavy metals in people

Static evidence pages. Grades A to F. Sources named.

Browse pages

Kids

Are heavy metals linked to autism in kids?

No study in this corpus tests a causal link between heavy metals and autism. The question is not graded. A separate question, whether DMSA improves autism symptoms, was reviewed by Cochrane: one flawed randomized trial, no evidence of benefit, and a statement that risks outweigh proven benefits. That grade is on the DMSA page.

The chelation trial is a different claim

James and colleagues (2015) included the Adams trial and concluded there was no evidence of an effect on autism symptoms. doi:10.1002/14651858.CD010766.pub2. CDC also reported a death in a child with autism given disodium EDTA. MMWR 2006.

Related pages

Sources

  1. James et al. 2015 Cochrane review, PMID 26114777
  2. CDC MMWR 2006;55(08):204-207

Heavy Metal Index

Heavy Metal Index health pages. This Heavy Metal Index URL returned HTTP 200 on 15 October 2026. Figures on this page are not copied from that index. They come from the sources named above.

What's safe to buy

The Heavy Metal Tested and Certified public register listed no licensees on 15 October 2026. That page reported 0 certified brands and 0 certified products, and it stated that no brand has completed the three-lot baseline. A specimen layout on the register is an illustration, not a licensee. This page does not name or rank any brand.

The program states that certification is a measurement of a product against a published limit, not a statement that the product is safe. If a licensee is later listed for this category, it will be on the register.

This page summarizes cited documents. It does not diagnose or prescribe. Reviewed 15 October 2026.