Health and well-being of older populations affected by humanitarian crises in low- and middle-income countries: a scoping review of peer-reviewed literature.

Background: The convergence of global demographic changes and rising humanitarian crises in low- and middle-income countries (LMICs) has raised the number of affected older people (OP). These individuals face the challenges of aging and the adverse conditions of disasters, particularly pronounced in LMICs. This review aims to explore literature on the health and well-being of older populations during humanitarian crises in LMICs.

Methods: This scoping review included primary studies on the health and well-being of older populations in humanitarian crises in LMIC. A search was conducted in five bibliographic databases last updated in 2023. A numerical summary and thematic analysis of study characteristics and themes were executed and findings were narratively synthesized.

Results: A total of 84 eligible studies were included. The majority of studies were quantitative (n = 56), followed by qualitative (n = 22) and mixed-methods (n = 6). Most literature focuses on the high burden of mental health conditions and their determinants, such as depression, anxiety, and Post-Traumatic Stress Disorder (PTSD). The second most common theme is physical health, discussing high levels of mortality, disability, some non-communicable diseases, and limited evidence on the poor nutritional status. OP lack access to routine healthcare due to cost barriers. The key gaps in the literature are in mental and psychosocial health, especially pertaining to vulnerabilities and risk factors, and to contextualized interventions. Physical health research is relatively narrow lacking a wider range of chronic diseases while no research was performed on communicable diseases other than COVID-19.

Conclusions: Findings show the complex vulnerabilities of OP in humanitarian crises which exacerbate their physical, mental, and psychosocial health outcomes. There is a need to strengthen evidence on the effectiveness of interventions, and to investigate determinants of health, especially mental and psychosocial health, across different contexts. Research should also explore cross-cutting issues like gender, access to livelihoods, and equitable access to humanitarian assistance.