Use of natural green spaces (NGS) is associated with improved psychological well-being (PWB). Ethnic minorities, particularly South Asian (SA) communities in the UK, face unequal access to NGS and experience a greater prevalence of health challenges than the general population. Improving access to green space can contribute to addressing current health inequalities. Following PRISMA guidelines, this systematic literature review aimed to synthesise existing research on NGS access barriers experienced by SAs and associations between NGS use and PWB. A comprehensive search was conducted through SAGE, Science Direct, and SCOPUS in August 2022; we included qualitative, quantitative and mixed-methods studies with findings on NGS access and/or associations between NGS use and PWB for SAs in the UK. We employed deductive thematic analysis to explore inhibitors and enablers of access which were then conceptualised through a multidimensional framework. Associations between NGS and PWB were coded inductively and mapped separately. This review is registered on PROSPERO: CRD42022353711. Twenty-six studies were included in the review which varied substantially in their aims, methods, context, and participants. Included studies on NGS grouped SAs within broader demographic categories such as minority ethnic communities or Muslims. Our findings indicate that SAs are disadvantaged in their access to NGS due to numerous intersecting factors including unequal distribution, inadequate transport, racialisation of NGS, and safety concerns. Whilst these findings generally aligned with broader literature on NGS access, certain access barriers and enablers are particularly significant to SA communities. We also identified several dimensions of PWB that are enhanced for SAs through interacting with NGS including overall mental health outcomes, physical wellbeing, and social relatedness. This review highlights opportunities to improve access to NGS and thereby enhance PWB outcomes for SA people. It also identifies the lack of primary research exploring NGS access and PWB associations for SA communities, specifically in rural contexts.
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