He will examine the role of socioeconomic, biographic, and psychosocial risk factors for multimorbidity in aging study populations using data from the Swedish National Study on Aging and Care (SNAC-K). The aim of his project is to map out longitudinal trajectories of multimorbidity in individuals aged 60+ and to connect inter-individual differences in the levels of multimorbidity burden, as well as its change over time, with socioeconomic, psychosocial, and leisure exposures measured at various phases over the life course.