Cleusa P. Ferri is an Affiliated Professor at the Universidade Federal de Sao Paulo in the post-graduation program of the Psychobiology Department, supported by Associação Fundo de Incentivo a Pesquisa (AFIP), and a Senior Epidemiologist at the Institute of Education and Health Sciences at the Hospital Alemao Oswaldo Cruz, Brazil. She worked as an international specialist on dementia for the Global Burden of Disease 2010 Project. In the same capacity, she was also involved with the MHGap project with the WHO. For 10 years Dr Ferri worked at the Institute of Psychiatry, King's College London. During this period, apart from her teaching and other research activities, she worked with the 10/66 Dementia Research Group, studying the epidemiology of dementia in low- and middle-income countries. She returned to Brazil, her home country, in 2013 and is now focusing her work on the epidemiology of ageing and dementia in Brazil and Latin America.