Mapping the evidence on dietary acculturation post-migration among Indian immigrants in Australia, Canada, New Zealand and the UK: a scoping review protocol

INTRODUCTION: Indian immigrants experience significant dietary acculturation post-migration, shifting from traditional diets to more westernised eating patterns influenced by socioeconomic and environmental factors. This transition, often marked by increased processed food consumption and reduced intake of traditional staples, contributes to elevated risks of obesity and type 2 diabetes. Despite the growing Indian diaspora in Australia, Canada, New Zealand and the UK, the evidence on their dietary acculturation remains limited. METHODS AND ANALYSIS: This review will adopt the Joanna Briggs Institute (JBI) methodology for scoping reviews. A three-step search strategy will be applied across databases including MEDLINE (via PubMed), CINAHL, Scopus and Web of Science. Google Scholar will be used as a supplementary search tool to identify additional relevant studies. The search will include peer-reviewed studies and grey literature published in English between 1 January 2000 and 22 May 2025. First-generation Indian immigrants of all ages will be included, while second-generation immigrants, refugee populations and studies linked to non-communicable disease interventions will be excluded. Screening will be conducted in Covidence by two independent reviewers, with discrepancies resolved by a third reviewer. Data will be extracted using a standard JBI tool, charted in tabular form, and synthesised narratively and thematically. ETHICS AND DISSEMINATION: As this review will use published and publicly available data, formal ethics approval is not required. Findings will be disseminated through peer-reviewed publication, conference presentations and community engagement.