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Introduction: Ultra-processed food addiction (UPFA) is a growing popular topic in the research arena. There are calls for its classification for diagnosis as a substance use disorder and behavioural disorder. Although evidence for UPFA is increasing, effective interventions remain scarcely available. This is a feasibility ty -50and acceptability study of "Liberate," an online, peer-supported psychoeducation intervention for adults self-identifying with UPFA. Methods: A single-group, pre- and post-mixed methods study with 6-month follow-up was used. Participants (n=86) attended a 6-week coach-led online programme which comprised educational sessions, peer-to-peer support, and a personalised abstinence or harm reduction approach to dietary changes. Quantitative data included UPFA symptom measurements (YFAS 2.0, CRAVED), mental wellbeing (WEMWBS), and anthropometrics (weight, kg, and body mass index BMI). Acceptability was assessed qualitatively using semi-structured interviews which were then analysed thematically using the Theoretical Framework of Acceptability. Results: Recruitment and retention rates were acceptable. Statistically significant improvements were observed in UPFA symptoms (YFAS mean reduction: -3.4; 95% CI: -4.5, -2.3), CRAVED scores (-1.4; 95% CI: -1.8, -0.9), and mental wellbeing (5.4; 95% CI: 3.2, 7.6) from baseline, post-intervention, and sustained at 6-month follow-up. BMI and weight change also showed a statistically significant reduction, but this was clinically negligible. Thematic analysis revealed high acceptability, with participants reporting greater self-awareness, reduced impulsive eating and eating behaviours, and increased confidence in managing UPFA symptoms. They found Liberate to be a psychologically safe and non-judgemental space, becoming aware that it was "not my fault," and developing hope of a future beyond the intervention. Peer support and education on the effects of addiction on the brain were reported as being particularly beneficial. They expressed a desire that healthcare professionals would refer to Liberate. Conclusion: This study finds "Liberate" an online UPFA intervention, to be a feasible and acceptable intervention. Further investigation through a randomised controlled trial would be needed to establish causality, long-term effectiveness, and potential scalability.
Bennett et al. (Wed,) studied this question.