Bengt grew up in the coastal town of
Piteå in
Norrbotten County, the northernmost
län in Sweden. He left the town when he was 19. Bengt's paternal grandfather worked as a teacher in the mining town of
Gällivare in northern Sweden, who later became a labour party leader and then the chairman of the city council. Karlsson received his PhD in Social Anthropology from
Lund University in 1997. His dissertation titled,
Contested Belonging: An Indigenous Peoples Struggle for Forest and Identity in Sub-Himalayan dealt with 'the modern predicament of the Rabha or Kocha people, their survival in the forest and their quest for identity.' For the thesis, Karlsson spent a year, between 1990 and 1995, for
ethnographic fieldwork with the
Rabha people living in India, Karlsson has lived in several countries such as
Austria,
India, the
United States,
England,
Georgia, and
Kenya. Several of his childhood friends have returned to Piteå after living and working in
Stockholm for a few decades. == Academic career ==