METALLOPATHY Evidence on heavy metals in people

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

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Detox and binders

Does bentonite bind heavy metals in people?

The human randomized trials located for bentonite clay measured aflatoxin biomarkers in adults in Ghana, not metals. They are cited so they are not mistaken for metal evidence. No qualifying human metal study was located, which is not the same as evidence of no effect.

Why those trials are listed

Afriyie-Gyawu 2008 and Wang 2008 studied NovaSil and aflatoxin biomarkers in 177 adults. PMIDs 17852392 and 18478481. PMID 17852392. They do not answer a metal question.

Sources

  1. Afriyie-Gyawu et al. 2008, PMID 17852392, doi:10.1080/02652030701458105
  2. Wang et al. 2008, PMID 18478481

Heavy Metal Index

Heavy Metal Index: metal registry. 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.