Mario Barbagallo is a Professor of Internal Medicine and Geriatrics and is the Director of the Geriatric Unit, Internal Medicine, and Medical Department at the University of Palermo, Italy. He is the President of the IAGG-ER (International Association of Gerontology and Geriatrics—European Section) and is a member of the Superior Council of the Italian Ministry of Health. He received his PhD in physiology from the University of Parma and the University of Rome. He is the Director of the Geriatric Unit, Internal Medicine Unit, Director of the Medical Department, University Hospital, and the Director of the postgraduate School of Geriatrics at the University of Palermo, Italy. He is Editor-in-Chief of the Geriatric Nutrition Section of Nutrients. His research interests include different fields in internal and geriatric medicine including nutritional problems in the elderly population. please check meaning retained.