contradicts established science— The claim itself is physically incoherent or contradicted by replication; the underlying hardware may be ordinary electronics.
A trivial DC source claimed to 'kill parasites' and cure disease. The hardware is real; the sterilize-by-current cure claim is physically incoherent and was the subject of FTC/FDA action.
Origin & lineage
Hulda Clark, late 1990s–2000s.
Claimed mechanism
Low-voltage current 'kills parasites / pathogens', curing disease.
Plausibility
Implausible — 5–9V DC cannot meaningfully penetrate skin or selectively kill pathogens.
Evidence — grade F
No credible evidence; FTC actions + refunds; FDA warning letter; Clark convicted of practicing medicine without a licence.