Gülistan Bahat is professor at Istanbul University, Istanbul Medical School, Department of Internal Medicine, Division of Geriatrics, Istanbul, Turkey. She has performed medical training in Hacettepe University (1998), postgraduate education on internal medicine (2004) and geriatrics (2009) in Istanbul Medical School. She has been awarded as associate professor in 2012 and professor in 2018. Her main fields of interest are sarcopenia, frailty, dysphagia, sarcopenic obesity, nutrition, inappropriate prescribing-polypharmacy, osteoporosis and treatment of chronic diseases in the older adults, She has more than 100 articles published in web of science with an h-index of 19 (google scholar), 13 (web of science) and i10 index of 29. She has published many national articles, book chapters and given invited international and national lectures. She has co-authored two international consensus-position statements on sarcopenia and inappropriate drug use in the older adults.