METHUSELAH ARCHIVE INTERVENTIONS / ANIMAL MAGNETISM (MESMERISM)

Animal magnetism (mesmerism)

regimen · 1778–1784
category:regimen
delivery:Group sessions around the 'baquet' (a large wooden tub fitted with iron rods, holding water and metal filings) at Mesmer's Paris practice. Patients sat around the baquet, held the rods or were connected by cords, and underwent an extended treatment during which the practitioner laid hands on or moved hands over affected body areas. Sessions typically produced convulsions, weeping, laughter, fainting, or trance-like 'crises' interpreted by the practitioner as the restoration of magnetic-fluid flow.
price tier:top_only
era:1778–1784
current status:historical
regulatory:withdrawn
SHORT PITCH (AS SOLD)
Group treatment around the magnetized baquet apparatus, claimed to restore health and well-being in patients of all conditions through the operator's redirection of a universal magnetic fluid through the body.
THE ACTUAL EVIDENCE
No controlled outcome data were published during the practice's active period. The 1784 royal commission (headed by Benjamin Franklin, with Antoine Lavoisier, Jean-Sylvain Bailly, Joseph-Ignace Guillotin, Jean d'Arcet, and Jean-Baptiste Le Roy) examined the practice under blind and controlled conditions and concluded that there was no evidence for a magnetic fluid and that the observed effects were attributable to imagination, expectation, and suggestion. The mesmeric 'crises' were a placebo-and-suggestion phenomenon, not a fluid-mediated therapeutic effect.
PRACTITIONERS
INGREDIENTS
CASES
CLAIMS
SOURCES
  1. Mémoire sur la découverte du magnétisme animal (1779)
  2. Rapport des commissaires chargés par le Roi de l'examen du magnétisme animal (Public Report) (1784)
  3. Confidential Report of the Commissioners to the King on Animal Magnetism (Secret Report) (1784)
NOTES

Animal magnetism, as developed and marketed by Franz Anton Mesmer in Paris from 1778 to 1784, was the founding instance of modern elite-targeted clinical-rejuvenation practice. The intervention operated on the proposed mechanism of a ‘universal fluid’ analogous to gravity or electricity that flows through and connects all living things. Treatment took place around the ‘baquet’ apparatus in group sessions and produced dramatic patient experiences (convulsions, weeping, fainting, trance) interpreted by the practitioner as therapeutic crises. The 1784 royal commission’s blind and controlled investigation is the founding methodological event of evidence-based clinical disconfirmation in medicine.