Alexandre Kalache is a medical epidemiologist specializing in the study of aging. Since 2012, he has been the President of the International Longevity Centre - Brazil, and since 2015, he has served as co-President of the Global Alliance of International Longevity Centres. He formerly directed the World Health Organization’s global aging program, founding WHO Global Network for Age-Friendly Cities and Communities. Prior to his tenure at the WHO, Kalache pursued an academic career largely in the United Kingdom at the Universities of London and Oxford. Kalache has researched, written and spoken in the field of aging as an academic, international civil servant and advocate.