Light metals such as beryllium and lithium are toxic to humans.

Is it true that light metals such as beryllium and lithium are toxic to humans?

Partly. Several sources group beryllium with toxic metals and link beryllium exposure to disease, while one dietary risk assessment found no risk from beryllium or lithium at measured exposure levels. None of the items addresses lithium's toxicity directly, so the evidence covers only part of the claim.

Verdict: CONTESTED PARTIAL · 4 sources for, 1 against · Last checked 3 Oct 2026

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Beryllium Toxicity: What is Beryllium? | Environmental Medicine | ATSDRMinus. (n.d.). archive.cdc.gov. https://archive.cdc.gov/www_atsdr_cdc_gov/csem/beryllium/beryllium.html

Pearson, A. J. & Ashmore, E. (2020). Risk assessment of antimony, barium, beryllium, boron, bromine, lithium, nickel, strontium, thallium and uranium concentrations in the New Zealand diet.. doi.org. https://doi.org/10.1080/19440049.2019.1704445

Ameen, W. (2025). RELATIVE EFFECTS OF HEAVY METALS ON Labeo rohita, Cirrhinus mrigala, Cyprinus carpio OF HEAD PUNJNAND AND HEAD ISLAM. zenodo.org. https://doi.org/10.5281/zenodo.14793759

Abdullahi, F. & Samira, A. (2005). Toxic Trace Elements in the Hair of Children with Autism. eric.ed.gov. https://doi.org/10.1177/1362361305053255

NMS, S., LS, M., LFA, M., & FAL, M. (2026). Mining Activities Have Exposed Individuals of an Indigenous Tribe in Brazil to Toxic and Potentially Toxic Elements.. doi.org. https://doi.org/10.1007/s40615-026-02918-y