Diet and health inequalities: Connecting with vulnerable groups to address food insecurity-the DIO food project.

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The current cost-of-living crisis is disproportionately affecting families experiencing poverty and is likely to be amplifying existing dietary inequalities and challenges, such as food insecurity (FI). Government policies designed to address diet inequality in the UK have historically had minimal impact on population diet and health and may have even widened existing inequalities. Therefore, the effect of nutrition policies on those experiencing FI in the context of the current cost-of-living crisis needs to be better understood. The aim of the Diet and Health Inequalities (DIO Food) project is to work with early years, people living on a low income and retailers to generate opportune evidence-based research and commentary that will inform diet-related health inequalities policy and practice. DIO Food is related to the existing Food Insecurity in people living with Obesity (FIO Food) project, which consists of four interlinked work packages (WPs1-4). DIO Food consists of three interlinked work packages (WPs5-7), which enhance the scope of FIO Food, and are described in this article. WP5 addresses a paucity of research on maternal and infant food insecurity in the UK, by applying a qualitative research approach to capture parents' and carers' perceptions of the relationship between the food system and other influences impacting infant feeding practice, associated with the cost-of-living crisis. WP6 will conduct the first-ever cross-retailer independent evaluation of England's high fat, sugar and salt (HFSS) product placement legislation. Researchers will analyse store-level supermarket sales data provided by large UK retailers to produce sector-level insights into whether HFSS legislation reduced HFSS purchasing, improved the healthiness of retailer product portfolios, and was equitable across areas with different characteristics. WP7 will support WP5 and 6, by strengthening engagement with key stakeholders, including at-risk consumers and representatives of major supermarkets, and effectively translating research outcomes and stakeholder perspectives for policy and industry decision-makers.