Sugar Habit Hacker: A pilot randomised controlled trial of personalised normative feedback to change sugar consumption

= -0.27; 95% CI [-0.43, -0.11]), and this change was maintained at two months. Improvements were found for all secondary outcomes except mental well-being. There were, however, no significant group-by-time interactions for sugar intake or other outcomes.ConclusionPNF shows promise in improving sugar consumption, but outcomes were similar to offering a personalised summary of scores alone. Given rapid recruitment and strong retention, future research should compare these conditions with a true control group that provides no feedback. Further work should also examine the reliability and validity of the FFQ for measuring sugar consumption.