This is the central life-extension claim of Cagliostro’s Egyptian Rite: that an adept who withdrew for the prescribed forty-day “moral and physical regeneration” would emerge with the body made young again. As recorded by Henry Ridgely Evans (1919), reproducing the nineteenth-century occultist Eliphas Levi’s account, the regimen had the adept pray for forty days and sleep forty nights in a tiered tabernacle, after which “your body shall become as pure as that of a child” and he attains “that perfect repose which is the beginning of immortality”. Evans and Levi are late secondary renderings rather than contemporary eighteenth-century records, so the ritual detail is attributed to that account; the general promise of restored youth is independently attested by Trowbridge (1910) and McCalman (2003). The claim is classified at a hard endpoint (restored youth and a renewed lifespan) and as refuted: no regeneration was ever demonstrated, the regimen produced no measured rejuvenation, and the 1791 Roman Inquisition condemned Cagliostro’s arcana as impostures and identified him as Giuseppe Balsamo, who died imprisoned at San Leo in 1795 at roughly fifty-two without having renewed himself. The refutation is the contemporary exposure and the absence of any demonstrated effect, not a modern controlled trial.