Heavy water is the fountain of youth

James E. Kendall : scientist
Ten years or more may be added to man’s life by drinking heavy water, predicts Dr. James E. Kendall, head of the chemistry department at Edinburgh University, in Scotland. Heavy water, containing the heavy hydrogen atom, has the same effect on the body as lowering its temperature without actually doing so. It would slow functional processes, reducing bodily wear and tear without appreciably impairing man’s faculties. Dr. Kendall believes persons over sixty soon will drink heavy water to slow the pace of life and to prolong it

GREGORY BENFORD, Popular Mechanics, (2012), "The Future That Never Was: Pictures from the Past', [online], Available: http://www.popularmechanics.com/technology/engineering/future-that-never-was-next-gen-tech-concepts?click=main_sr#slide-1