Abstract:Calorie-labelling has been suggested as an anti-obesity measure but evidence on its impact is scarce and formatting guidance not well-defined. This study tested the impact of prominent calorie-labelling on sales of the labelled items. Prominent calorie labels were posted in front of two popular items for a period of a month. Sales were recorded for two consecutive months, prior to and during labelling. Muffins sales (the higher calorie-item) fell by 30% while sales of scones rose by 4%, a significant difference (X 2 = 10.258, p=0.0014). Calorie-labelling is effective when noticed. Wider-adoption of calorie-labelling for all food-business and strengthening legislation with formatting guidelines should be the next step in public health policy.Introduction:
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