Serhiy Dekhtyar

Title: Principal researcher

Sector: Medicine

Research group: Chengxuan Qiu


KI Profile page:

Phone: +46 8 524 858 18


Portrait of Serhiy Dakhtyar.

Serhiy Dekhtyar is a researcher at the Aging Research Center (ARC). He is also a Docent in Geriatric Epidemiology. His work concerns risk and protective factors for dementia in a life course perspective. He is also interested in longitudinal evolution of multimorbidity, the coexistence of multiple chronic conditions within the same individual. Dr. Dekhtyar is the principal investigator for the project investigating mental health outcomes in older adults in relation to lifelong socioeconomic disadvantage and multimorbidity financed by the Swedish Research Council for Health and Working Life (FORTE).

Serhiy Dekhtyar obtained his PhD in 2013 from the Centre for Economic Demography at Lund University. During his postdoctoral training at Karolinska Institutet (Department of Clinical Neuroscience, Division of Psychology; Herlitz research group), Serhiy investigated the role of intellectual stimulation over the life course and the risk of dementia disorders in late life. He has also done work on contextual effects in cognitive ageing, as well as gender differences in cognition and their effects on career gender segregation in Sweden.

PI of the project

Mental health in old age: the role of social disadvantages throughout the life course and across birth cohorts

Selected publications

Dekhtyar, S., Marseglia, A., Xu, W., Darin‐Mattsson, A., Wang, H.-X., Fratiglioni, L. (2019) Genetic risk of dementia mitigated by cognitive reserve: A cohort study. Annals of Neurology, 86(1), 68-78.

Calderon-Larrañaga, A., Vetrano, D.L., Grande, G., Welmer, A-K., Rizzuto, D., Fratiglioni, L., Dekhtyar, S. (2019), Psychological correlates of multimorbidity and disability accumulation in older adults. Age and Aging, 2019 Nov 1;48(6):789-796. doi: 10.1093/ageing/afz117. 

Dekhtyar, S., Vetrano, D.L., Marengoni, A., Wang, H.-X., Pan, K-Y., Fratiglioni, L., Calderón-Larrañaga, A. (2019). Association Between Speed of Multimorbidity Accumulation in Old Age and Life Experiences: A Cohort Study. American Journal of Epidemiology, 188(9) 1627–1636.

Dekhtyar, S., Weber, D., Helgertz, J., Herlitz, A. (2018). Sex differences in academic strengths contribute to gender segregation in education and occupation: A longitudinal examination of 167,776 individuals. Intelligence, 67(1), 84-92.

Wang, H.X., MacDonald, S., Dekhtyar, S., Fratiglioni, L. (2017). Association of life-long exposure to cognitive reserve-enhancing factors with dementia risk: a community-based cohort study. PLOS Medicine, 14(3): e1002251. doi:10.1371/journal.pmed.1002251

Dekhtyar, S., Wang, H-X., Fratiglioni, L., & Herlitz, A. (2016). Childhood school performance, education, and occupational complexity: a life course study of dementia from the Kungsholmen project. International Journal of Epidemiology, 45(4), 1207-1215.

Dekhtyar, S., Wang, H-X., Scott, K., Goodman, A., Koupil, I. & Herlitz, A. (2015). A life-course study of cognitive reserve in dementia. From childhood to old age. American Journal of Geriatric Psychiatry, 23(9), 885-896.