This review assessed the effects of environmental labels on consumers’ demand for more sustainable food products. Six electronic databases were searched for experimental studies of ecolabels and food choices. We followed standard Cochrane methods and results were synthesized using vote counting. Fifty-six studies (N = 42,768 participants, 76 interventions) were included. Outcomes comprised selection (n = 14), purchase (n = 40) and consumption (n = 2). The ecolabel was presented as text (n = 36), logo (n = 13) or combination (n = 27). Message types included: organic (n = 25), environmentally sustainable (n = 27), greenhouse gas emissions (n = 17), and assorted “other” message types (n = 7). Ecolabels were tested in actual (n = 15) and hypothetical (n = 41) environments. Thirty-nine studies received an unclear or high RoB rating. Sixty comparisons favored the intervention and 16 favored control. Ecolabeling with a variety of messages and formats was associated with the selection and purchase of more sustainable food products.

本次审查评估了环境标签对消费者对更可持续食品的需求的影响。搜索了六个电子数据库以进行生态标签和食品选择的实验研究。我们遵循标准 Cochrane 方法，并使用计票来合成结果。纳入了 56 项研究（ N = 42,768 名参与者，76 项干预措施）。结果包括选择 ( n = 14)、购买 ( n = 40) 和消费 ( n = 2)。生态标签以文本（ n = 36）、徽标（ n = 13）或组合（ n = 27）的形式呈现。消息类型包括：有机（ n = 25）、环境可持续（ n = 27）、温室气体排放（ n = 17）和各种“其他”消息类型（ n = 7）。生态标签在实际 ( n = 15) 和假设 ( n = 41) 环境中进行了测试。 39 项研究获得了不明确或较高的 RoB 评级。 60 项比较支持干预，16 项比较支持控制。具有各种信息和格式的生态标签与选择和购买更可持续的食品有关。