Study Shows Benefits of Restricting Junk Food in Supermarkets

Recent research conducted by the University of Leeds highlights the positive effects of legislation that limits the sale of foods high in fat, sugar, and salt (HFSS) within supermarkets in England. Implemented as part of the UK Government's Childhood Obesity Strategy in October 2022, these restrictions aim to promote healthier eating habits and reduce obesity rates. The analysis revealed that, following the legislation, there was a significant decline in the purchase of HFSS products, with estimates indicating around two million fewer such items sold daily. Before the law's enforcement, 20% of items sold were HFSS; this number decreased to 19%. The study used store-level sales data from major retailers like Asda, Morrisons, Sainsbury's, and Tesco, coupled with neighborhood analysis via the Priority Places for Food Index to identify areas needing better access to affordable, healthy foods. Additionally, surveys and interviews with supermarket representatives, enforcement officers, and nearly 2,000 shoppers provided insights into public perception and behavioral changes. Professor Michelle Morris from the university emphasized that the legislation has been a positive step in reducing HFSS sales and called for further measures to make healthy foods more accessible and appealing. The research, part of the broader DIO-Food project led by Professor Alexandra Johnstone, also stresses the importance that new policies do not exacerbate existing inequalities, especially among vulnerable groups. Co-investigator Dr. Alison Fildes noted that while shoppers generally support the legislation, there is a need for increased promotion and affordability of healthier options. The findings reinforce that regulatory actions can effectively influence consumer purchasing behaviors and contribute to better public health outcomes. For more details, see the original study published on the Open Science Framework and in Food Policy.