This is the headline benefit claim, and the source of the device’s name. Tyrrell wrote that ‘The letters J. B. L. are the initials of the words Joy, Beauty, Life, which aptly indicate its purpose and effects, for we confidently claim that its use will infallibly confer these three great blessings, it being the one safe and sanative method of regaining and preserving health’ (The Royal Road to Health, 1894). The claim is classified as refuted: it rested on testimonial language and on the discredited autointoxication theory, with no controlled human outcome data. Mathias (2018) reads the over-assured, quasi-religious phrasing (‘confidently,’ ‘infallibly,’ ‘blessings’) as a signal of the marketing’s misleading purpose, and Ernst (1997) finds the colonic-irrigation practice without scientific rationale and potentially harmful. The promised restoration of health and vitality is the case’s life-extension claim; it was never demonstrated.