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Igor Grabovac
Ap. Prof. Priv.-Doz. Dr. med. Dr. scient. med. Igor GrabovacSpecialist Physician in Public Health

Center for Public Health (Department of Social and Preventive Medicine)
Position: Consultant

ORCID: 0000-0001-9605-1467
T +43 1 40160-34897


HIV; Homeless Persons; Homosexuality; Mental Health; Occupational Health; Public Health; Social Discrimination; Social Stigma; Vulnerable Populations

Research group(s)

Research interests

My research focus encompasses a variety of public health topics, mostly concerning the health and well-being of marginalized, underserved, stigmatized, socioeconomically disadvantaged, or otherwise so-called vulnerable populations that are disproportionately affected by the exceeding inequalities, exacerbated in the current context of war, cost-of-living and energy crises, as well as various infectious disease outbreaks. While there is no finite list of which groups may be considered among “vulnerable populations”, these might include migrants and refugees, sexual and gender minorities (LGBTQIA+ people), older adults, people experiencing homelessness, people living with chronic or terminal illnesses, children, as well as racial and ethnic minorities. Evidence from the past decades of research in various disciplines has clearly shown that social inequalities both engender and perpetuate adverse health outcomes (such as higher morbidity and mortality, poorer quality of life, mental health, and overall well-being), either through direct psychological and physiological processes or as the result of barriers in access to health and care services due to cultural, economic, and social discrimination or other exclusionary mechanisms, which is what my research aims to both elucidate and improve.

Techniques, methods & infrastructure

Our multidisciplinary team (physicians, nurses, medical anthropologists, social scientists, psychologists, exercise and nutrition scientists) uses a variety of clinical medical tests such as body impendance analysis, accelerometer monitoring, heart variability, 24h ECG monitoring, cardiac stress testing, hand strength measuring. We also use a variety of questionnaires for different outcomes and qualitative interviews and focus group analysis. By accessing and evaluating data from large open datasets we examine various outcomes using a variety of statistical methods. 


Selected publications

  1. Jeleff, M. et al. (2024) ‘Cancer risk factors and access to cancer prevention services for people experiencing homelessness’, The Lancet Public Health, 9(2), pp. e128–e146. Available at:
  2. Grabovac, I. et al., 2019. Health Care Providers’ Advice on Lifestyle Modification in the US Population: Results from the NHANES 2011-2016. The American Journal of Medicine, 132(4), pp.489–497.e1. Available at:
  3. Grabovac, I. et al., 2019. Human Immunodeficiency Virus Infection and Diverse Physical Health Outcomes: An Umbrella Review of Meta-analyses of Observational Studies. Clinical Infectious Diseases. Available at:
  4. Schiffler, T. et al. (2023) ‘Access to cancer preventive care and program considerations for people experiencing homelessness across four European countries: an exploratory qualitative study’, eClinicalMedicine, 62, p. 102095. Available at:
  5. Grabovac, I. et al., 2019. Well-Being Among Older Gay and Bisexual Men and Women in England: A Cross-sectional Population Study. Journal of the American Medical Directors Association, 20(9), pp.1080–1085.e1. Available at: