Die Kunst, das menschliche Leben zu verlängern (first edition)
Die Kunst, das menschliche Leben zu verlängern is the founding text of longevity medicine as a self-conscious medical project and the primary citation for Hufeland’s life-extension doctrine as he stated it. The first edition was published in Jena in 1797 by the Akademische Buchhandlung in two volumes; the title Makrobiotik (from Greek roots for “long life”) was added from the third edition (Berlin, 1805) and became the title by which the work is now generally cited. The book argues that life is the operation of a vital power (Lebenskraft), that this power is consumed by vital activity, and that the length of life is set by the quantity of the power and the rate of its consumption. The practical conclusion is a regimen intended to retard that consumption. The work contains no controlled outcome data; the case for the regimen rests on the posited vital force, on physiological analogy, and on longevity anecdotes (the spare diet of the Venetian Luigi Cornaro and reports of long-lived populations). The first-edition imprint and identifier in this archive are taken from the Wellcome Library public-domain scan on the Internet Archive (b28762812). The English-language text used for verbatim chapter headings in this case is the 1867 Erasmus Wilson edition (separate source entry).