Effets produits chez l'homme par des injections sous-cutanées d'un liquide retiré des testicules frais de cobaye et de chien
primary document · 1889
SUMMARY
The founding document of modern elite-targeted rejuvenation medicine. Communicated to the Société de Biologie at the meeting of 1 June 1889. Brown-Séquard reports his self-administration of five subcutaneous injections of aqueous extract from guinea-pig and dog testes over an 18-day period and the subjective improvements in physical and mental function he observed. The communication contains no controlled comparison, no blinding, no independent assessment, and no measurement of the active substance later identified as testosterone. Modern reconstruction (Cussons et al 2002) shows the testosterone delivered was 10,000-fold below any therapeutic level. The document is foundational for the history of endocrinology and for the history of rejuvenation medicine; it should be read in both registers.
NOTES
The 1 June 1889 communication is the founding text of modern elite-targeted rejuvenation medicine. The document is foundational for the history of endocrinology as well, since the underlying intuition (testes secrete an active substance whose decline drives senescence-like decline) was directionally correct and prefigured the discovery of testosterone in the 1930s. The gap between intuition and execution in the document is the structural template for the recurring pattern that this archive documents: a biologically plausible-sounding intervention sold on the strength of a credentialed promoter’s self-report, with the actual delivery falling far short of what the proposed mechanism would require.