Evaluation of a nutrition education and cooking programme (NEST) in vulnerable adults who are at high risk of food insecurity

Within Australia, the prevalence of food insecure individuals increased from 2.6 million in 2014–2016 (10.8%) to 3.1 million in 2018–2020 (12.3%) due to the COVID-19 pandemic.⁽¹⁾ OzHarvest is a not-for-profit organisation that prioritises food salvaging, food waste prevention and nutrition education.⁽²⁾ OzHarvest's education sector facilitates a programme known as Nutrition Education Skills Training (NEST). NEST is a 6-week programme providing weekly workshops of 2.5-hour duration offering skills training on cooking simple, healthy, and affordable meals to adults at risk of food insecurity. This study aimed to determine the immediate and longer-term impacts of participation in NEST. A quasi-experimental study with pre-post surveys (n = 258) and follow-up surveys (n = 20) was conducted from June 2019 to July 2022. Survey results were obtained from NEST program participants (18 years) from Adelaide, Canberra, Melbourne, Newcastle, Queensland, and Sydney. Baseline (pre-) and post-surveys (at program completion) were administered to participants, with an option for a 6-month follow-up survey. Participants were required to complete both surveys to be eligible for this study. Questionnaires included 23 core questions adapted from previous studies,⁽³⁾ allowing evaluation of nutrition knowledge, confidence and self-efficacy, shopping, and food preparation behaviours, and eating behaviours. Food security was assessed using the standard 6-item indicator set for classifying households by food security status level. Using paired t-tests, Shapiro Wilks, and Wilcoxon sign-ranked tests for pre and post survey data, participants demonstrated overall improvement in nutrition knowledge (p < 0.001), confidence and self-efficacy (n = 222; p < 0.001) and food preparation behaviours (p < 0.001). The intake of discretionary foods overall decreased (p < 0.001) while fruit, vegetable and water intake increased (p < 0.001). Food security improved from 57% to 68% immediately within the population (p < 0.001). Using RMANOVA and Shapiro Wilks tests, the 6-month survey results were compared to the pre surveys suggested longer lasting improvements in nutrition knowledge (p < 0.001), cooking confidence (n = 8; p = 0.033), food preparation behaviours (p = 0.003), and increased vegetable intake (p = 0.032) and fruit intake (p = 0.012). Participation in OzHarvest's NEST programme results in short-term improvements in food security levels and dietary behaviours. Over the longer term, these changes were sustained but to a lesser degree, indicating that systemic changes are required to address underlying socioeconomic disadvantage.