출연진
Michael Mosley
Self / Presenter / Journalist
Fauja Singh
Self / 100+ year old marathon runner
Luigi Fontana
Self / Professor, Washington University School of Medicine
Joe Cordell
Self / Calorie Restrictor on Optimal Nutrition (CRONy)
Valter Longo
Self / Professor, USC
Krista A. Varaday
Self / Professor of Nutrition, University of Illinois Chicago
Mark P. Mattson
Self / Professor, National Institute on Aging
Clare Mosley
Self / Wife / General Practitioner / Consultant