Taken in small regular doses, arsenic is safe and produces its benefits without lasting harm.
The safety claim is the one the whole trade depended on, and it is the one most starkly refuted. Arsenic is a cumulative poison: small doses do not pass harmlessly but build a body burden over time, and the International Agency for Research on Cancer classifies arsenic and inorganic arsenic compounds as carcinogenic to humans (Group 1). The “small regular dose” framing that made the nostrums marketable as everyday beauty aids is precisely the exposure pattern that produces chronic arsenical disease. This is the claim that distinguishes the arsenic case from the archive’s cheap-and-harmless regimen cases: here the marketed substance was actively dangerous.
Appears in
Sources
- Arsenic and inorganic arsenic compounds (IARC Monographs Vol. 100C) — International Agency for Research on Cancer. Arsenic and inorganic arsenic compounds. IARC Monographs on the Evaluation of Carcinogenic Risks to Humans, Volume 100C. Lyon: IARC (World Health Organization); 2012. Arsenic and inorganic arsenic compounds classified as carcinogenic to humans (Group 1).
- The Arsenic Century: How Victorian Britain Was Poisoned at Home, Work, and Play — Whorton JC. The Arsenic Century: How Victorian Britain Was Poisoned at Home, Work, and Play. Oxford: Oxford University Press; 2010. ISBN 978-0-19-957470-4.