Stuart Jay Olshansky (born 22 February 1954) is a professor in the School of Public Health at the University of Illinois at Chicago, concentrating on biodemography and gerontology. He is also a research associate at the Center on Aging (University of Chicago) and at the London School of Hygiene and Tropical Medicine. Olshansky is an associate editor of the Journal of Gerontology: Biological Sciences and Biogerontology and is a member of the editorial boards of several other scientific journals. Olshansky has been working with colleagues in the biological sciences to develop the modern "biodemographic paradigm" of mortality – an effort to understand the biological nature of the survival and dying out processes of living organisms. The focus of his research has been on estimates of the upper