Health Geography

Health geography explores the ways in which place and space influence the distribution of health and disease, the accessibility of health-care resources and the patterns of environmental and social exposures. Drawing on spatial analysis, geographic information systems and network modelling, the field examines how physical landscapes, built environments and socio-economic contexts shape health outcomes at scales ranging from neighbourhoods to entire regions. Central concerns include identifying “service deserts” where populations face prolonged travel to care, mapping the geographic misalignment of supply and demand, and revealing how environmental hazards or amenities cluster in ways that exacerbate or mitigate inequities. By integrating quantitative mapping with qualitative insights into lived experience, health geography informs policy on resource allocation, emergency response, urban design and the pursuit of universal health coverage. Its global remit spans antiretroviral therapy in sub-Saharan Africa, maternal care in low-income settings, cancer trial participation in high-income countries and beyond.

Research from Nature Portfolio

A national-scale geospatial and geostatistical framework applied to antiretroviral therapy provision in Malawi uncovered extreme geographic misalignments between HIV prevalence and service locations. Nearly one quarter of people living with HIV must walk up to three hours to reach care, and those facilities receive only a small fraction of the national drug supply. Detailed equity maps guided recommendations for reshaping service distribution. In Guinea’s Grand Conakry conurbation, least-cost path analysis calculated travel times to childbirth care by facility type and wealth quintile. While nearly all women live within 30 minutes of some facility, coverage for public hospitals falls markedly and traffic congestion disproportionately affects poorer communes. These integrative spatial methods quantify inequities and direct targeted infrastructure and service reforms.

Health Geography publication trend

The graph below shows the total number of articles in health geography across all publications each year (not limited to Nature Index journals).

Technical terms

Spatial accessibility: The ease with which populations can reach health-care services, integrating service distribution, travel cost and population demand.

Distance-decay effect: The principle that utilisation of a service declines as the distance or travel time to that service increases.

Least-cost path algorithm: A GIS-based technique that calculates the route between points which minimises travel cost or time, accounting for terrain, road networks and transport modes.

Travel impedance surface: A spatial model representing travel cost or time across a landscape, reflecting factors such as land cover, road quality and mode-specific speeds.

Supply-to-demand ratio: A metric comparing the capacity of a health facility (such as medication supply or bed numbers) to the population in its catchment area.

References

1. Extreme geographic misalignment of healthcare resources and HIV treatment deserts in Malawi. Nature Medicine (2025).
2. Inequities in spatial access to childbirth care in the Grand Conakry conurbation, Guinea. Nature Cities (2025).
3. Geographic Distribution of Clinical Trials for Advanced-Stage Cancer. JAMA Oncology (2024).
4. Access to emergency hospital care provided by the public sector in sub-Saharan Africa in 2015: a geocoded inventory and spatial analysis. The Lancet Global Health (2018).
5. Are differences in travel time or distance to healthcare for adults in global north countries associated with an impact on health outcomes? A systematic review. BMJ Open (2016).