There has been a growing interest in disability and poverty on the international research and policy stages. Poverty assessments for persons with disabilities may be affected by the experience of extra costs associated with a disability. This article provides a systematized review of the global literature on the direct costs associated with living with a disability at the individual or household level. We searched three databases for peer-reviewed journal articles that estimated extra costs associated with disability: Econlit, SocIndex and PubMed. We found 20 such studies conducted in 10 countries. These studies were predominantly from high-income countries. Although studies were heterogeneous (e.g., in terms of disability measures and cost methodologies), estimated costs were sizeable and some patterns were consistent across studies. Costs varied according to the severity of disability, life cycle and household composition. Highest costs were observed among persons with severe disabilities, and among persons with disabilities living alone or in small sized households. More quantitative evidence is needed using rigorous methods, for instance evidence based on longitudinal data and as part of policy evaluations. More internationally comparable data on disability is required for the quantitative evidence to develop, especially in low- and middle-income countries where studies are scarce. Qualitative and participatory research is also needed, especially to investigate unmet needs, and the consequences of extra costs.

The international development community is beginning to recognise that people with disabilities constitute among the poorest and most vulnerable of all groups, and thus must be a core issue in development policies and programmes. Yet the relationship between disability and poverty remains ill-defined and under-researched, with few studies providing robust and verifiable data that examine the intricacies of this relationship. A second, linked issue is the need for—and current lack of—criteria to assess whether and how disability-specific and disability ‘mainstreamed’ or ‘inclusive’ programmes work in combating the exclusion, marginalisation and poverty of people with disabilities. This article reviews existing knowledge and theory regarding the disability–poverty nexus. Using both established theoretical constructs and field-based data, it attempts to identify what knowledge gaps exist and need to be addressed with future research.

There is increasing international interest in the links between malnutrition and disability: both are major global public health problems, both are key human rights concerns, and both are currently prominent within the global health agenda. In this review, interactions between the two fields are explored and it is argued that strengthening links would lead to important mutual benefits and synergies. At numerous points throughout the life-cycle, malnutrition can cause or contribute to an individual’s physical, sensory, intellectual or mental health disability. By working more closely together, these problems can be transformed into opportunities: nutrition services and programmes for children and adults can act as entry points to address and, in some cases, avoid or mitigate disability; disability programmes can improve nutrition for the children and adults they serve. For this to happen, however, political commitment and resources are needed, as are better data.