Professor Puska was the Director General of the National Institute for Health and Welfare in Finland (THL) 2009–2013. Recently (2017-2019), he served as a Member of the National Parliament of Finland, including the Health and Social Affairs Committee and the Education Committee of the Parliament. Professor Puska continues also his affiliation with THL. THL is a comprehensive national institute for public health and welfare under Ministry of Health in Finland. It covers a broad range of health and welfare issues, from disease prevention, nutrition, lifestyles and environment, infectious disease control, and national vaccination programs to health and social services, health and welfare monitoring, and statistics. THL was formed after a merger of the National Public Health Institute (KTL) and the National Research and Development Centre for Welfare and Health (Stakes), and started its work in January 2009. Before THL Professor Puska was the Director General of KTL (2004-2008).
Professor Puska has, for most of his career, worked at KTL/THL. He was, for 25 years, the Director and Principal Investigator of the North Karelia Project: prevention of cardiovascular diseases in North Karelia and later on in all of Finland. Within 25 years, there was an over 80% decline in annual heart disease mortality among the working-age population, and a dramatic general improvement in public health took place. The project is widely seen as a model for successful population-based prevention of cardiovascular and other non-communicable diseases (NCD).
In 2001-2003 Professor Puska served as the Director for Non-communicable Disease Prevention and Health Promotion at the World Health Organization Headquarters in Geneva. At WHO, Pekka Puska directed the work on integrated prevention of NCD, targeting the main risk factors (tobacco, unhealthy diet, and physical inactivity) through health promotion, national programs, policy measures, and regional networks. Professor Puska’s Department was the focal point of this work that culminated in the adoption of the Global Strategy on Diet, Physical Activity, and Health by the World Health Assembly in 2004. Recently (2015-16) he chaired the Independent Expert Group for he Impact Assessment of the WHO/FCTC.
Professor Puska has, internationally and domestically, served in a number of scientific, expert and public health functions, WHO’s work, multinational projects, international conferences etc. He has over 500 scientific publications. Internationally, Professor Puska is the past President of the International Association of National Public Health Institutes (IANPHI). He has also served as the Chair of the Governing Council of the WHO International Agency for Cancer Research (IARC) and as the President of the World Heart Federation.