Prevalence of Hypertension and Its Risk Factors in Urban vs. Rural Populations: A Systematic Evidence Synthesis
Background: Hypertension is a leading modifiable risk factor for cardiovascular mortality, accounting for approximately 19.2% of global deaths in 2019. Its distribution across urban and rural geographies has historically differed, but rapid demographic and nutritional transitions are reshaping this landscape — particularly in low- and middle-income countries (LMICs). This review examines hypertension prevalence, risk factor profiles, and the awareness-treatment-control cascade across urban and rural populations. Methods: Evidence was synthesized from peer-reviewed population-based cross-sectional studies, systematic reviews, and meta-analyses published between 2013 and 2018. Primary sources include a landmark PLoS Medicine meta-analysis (Ranzani et al., 2018) of 299 surveys across 66 LMICs (n=19,770,946); the PURE multi-country study (n=142,042); and regional studies from India, Pakistan, Saudi Arabia, West Africa, and East Africa. Results: Pooled urban hypertension prevalence was 30.5% (95% CI: 28.9–32.0%) versus 27.9% (95% CI: 26.3–29.6%) in rural areas (urban-rural difference: 2.45%; 95% CI: 1.57–3.33%). This gap was largest in South Asia (7.50%) and sub-Saharan Africa (4.24%), and reversed in Europe and Central Asia (rural exceeding urban by 6.04%). Between 1990 and 2018, rural hypertension prevalence rose faster than urban. Urban risk factors included sedentary lifestyle, obesity, dietary sodium excess, and psychosocial stress; rural risk factors were dominated by poor healthcare access, low health literacy, undetected disease, and rising obesity. Awareness, treatment, and control were consistently lower in rural communities. Conclusions: While urban populations currently carry slightly higher hypertension prevalence in most LMICs, the rural burden is rising faster and is accompanied by a critical deficit in awareness, treatment, and control. Targeted rural screening programs, community health worker deployment, medication supply-chain improvements, and health literacy campaigns are urgently needed to avert a rural hypertension epidemic.