Urban health: Evidence, challenges, and directions

Sandro Galea, David Vlahov

    Research output: Contribution to journalReview article


    Urbanization is one of the most important demographic shifts worldwide during the past century and represents a substantial change from how most of the world's population has lived for the past several thousand years. The study of urban health considers how characteristics of the urban environment may affect population health. This paper reviews the empirical research assessing urban living's impact on population health and our rationale for considering the study of urban health as a distinct field of inquiry. The key factors affecting health in cities can be considered within three broad themes: the physical environment, the social environment, and access to health and social services. The methodologic and conceptual challenges facing the study of urban health, arising both from the limitations of the research to date and from the complexities inherent in assessing the relations among complex urban systems, disease causation, and health are discussed.

    Original languageEnglish (US)
    Pages (from-to)341-365
    Number of pages25
    JournalAnnual review of public health
    StatePublished - 2005


    • Cities
    • Mechanisms
    • Methods
    • Multilevel
    • Social epidemiology

    ASJC Scopus subject areas

    • Public Health, Environmental and Occupational Health

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