Abstract Although there is widespread agreement about the need to reduce teenagers’ consumption of sugar-sweetened beverages, banning these drinks from the school environment is not always feasible. In this paper, we tested whether increasing the assortment of healthier alternatives and clearly labelling them as healthy by means of traffic light coding qualifies as an alternative approach to reduce the consumption of sugar-sweetened beverages at school. In a field study, we tripled the assortment of healthy (‘green’) and relatively healthy (‘amber’) drinks and kept the assortment of sugar-sweetened (‘red’) drinks constant during five intervention weeks in two treatment Belgian schools. Compared to baseline and to an untreated control school, we found that the relative market share of red beverages dropped by more than 30 percentage points. In one school, this market share was taken by both green and amber drinks, while in the other school, only the consumption of amber drinks increased. We suggest that this easily applicable intervention circumvents some of the friction that accompanies banning sugar-sweetened drinks.

中文翻译：

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通过品种变化和交通灯编码促进学校健康饮品的选择：一项实地研究

摘要 尽管人们普遍同意需要减少青少年对含糖饮料的消费，但在学校环境中禁止这些饮料并不总是可行的。在本文中，我们测试了增加更健康替代品的种类并通过交通灯编码将它们明确标记为健康是否有资格作为减少学校含糖饮料消费的替代方法。在一项实地研究中，我们将健康（“绿色”）和相对健康（“琥珀色”）饮料的种类增加了两倍，并在两个比利时治疗学校的五个干预周内保持了各种含糖（“红色”）饮料的种类不变。与基线和未经处理的对照学校相比，我们发现红色饮料的相对市场份额下降了 30 多个百分点。在一所学校，这一市场份额被绿色和琥珀色饮料占据，而在另一所学校，只有琥珀色饮料的消费量有所增加。我们建议这种易于应用的干预措施可以避免因禁止含糖饮料而引起的一些摩擦。