A systematic review of dietary assessment methods used for South Asian migrants in high-income host countries

Abstract

Aim

The increased risk of chronic diseases and migration to high-income countries in South Asians has been well established. Considering exposure to changing dietary intake and lifestyle upon migration, accurate nutrition assessment is crucial in this population. The present review aims to summarise dietary assessment methods and nutrient databases for South Asian (SA) migrants in high-income countries.

Data Synthesis

A systematic search of Medline, Web of Sciences, Embase, CINHAL and Cochrane Central Library databases was conducted in August 2023. Eligible studies were critically appraised using Joanna Briggs Institute Critical Appraisal Tools. Data was extracted using a purpose-built spreadsheet. This systematic review has been registered with PROSPERO (Reg ID: CRD42021274929).

Conclusions

A total of 12991 studies were identified, of which 46 met the eligibility criteria. Dietary assessment methods were categorised as newly validated, previously validated, and not validated. Only ten studies used a validated culturally appropriate dietary assessment tool. This review shows that FFQ and 24-hour (24hr) dietary recall are the most utilised dietary assessment tools for SA migrants. The findings highlight the limited culturally appropriate dietary assessment tools available for SA migrants. Specific design and validation issues, such as cultural specificity, were identified that researchers should consider when developing new nutritional assessment tools for SA migrants.