Alan J. Sinclair is Director of the Foundation for Diabetes Research in Older People (fDROP) and has led several global initiatives on diabetes in older people. He regularly provides advice on diabetes and clinical gerontology to the Department of Health, Association of British Clinical Diabetologists, Diabetes UK, and to the WHO as an expert in ageing and in frailty.John E. Morley is Professor of Geriatric Medicine at Saint Louis University School of Medicine, USA.Bruno Vellas is Head of the Toulouse Gerontopole, Head of the Department of Internal Medicine and Geriatrics at Toulouse University Hospital, and Head of the Alzheimer Disease Clinical Research Centre, University of Toulouse and a member of INSERM (National Institute of Medical Research) 1295 Maintain Team, France.Matteo Cesari is Associate Professor of Geriatrics at the University of Milano and Head of the Geriatric Unit at the IRCCS Istituti Clinici Scientifici Maugeri, Italy.Medha Munshi is Associate Professor of Medicine at Harvard Medical School, Director of the Joslin Geriatric Diabetes Program, and Geriatrician at Beth Israel Deaconess Medical Center, USA.