Professor Karl Peltzer is a Research Director in the research programme HIV/AIDS, STI and TB (HAST) at the Human Sciences Research Council, South Africa, an extraordinary Professor in Psychology at Free State University, South Africa, and a Visiting Professor in Psychology at University of Klagenfurt, Austria. He was previously Professor of Psychology and Director of the Health Behaviour Research Unit at the University of Limpopo. His education is a Dr Habil in Health Psychology from University of Klagenfurt, PhD in Social Health Psychology from University of Hannover and MA in Clinical Psychology from University of Bremen. He is a prevention researcher and evaluator with over 25 years of experience in the study of health promotion, risk behaviour and disease prevention, and socio-behavioural interventions. Dr Peltzer has published extensively on health behaviour and health interventions (16 books, 350 articles, and 50 book chapters). He has worked extensively on public health subject areas of alcohol, tobacco, cancer, tuberculosis and HIV control; nutrition, physical activity, hypertension, mental health, injury and violence prevention and health promotion. His current research interests include psychology applied to health, health promotion, chronic diseases of life style, substance use, communicable diseases including HIV, injuries, cultural health practices, and programme evaluation in low and middle income countries including Africa.