PDF(Pubmed)
Abstract：
Although diets influence health and the environment, measuring and changing nutrition is challenging. Traditional measurement methods face challenges, and designing and conducting behavior-changing interventions is conceptually and logistically complicated. Situated local communities such as university campuses offer unique opportunities to shape the nutritional environment and promote health and sustainability. The present study investigates how passively sensed food purchase logs typically collected as part of regular business operations can be used to monitor and measure on-campus food consumption and understand food choice determinants. First, based on 38 million sales logs collected on a large university campus over eight years, we perform statistical analyses to quantify spatio-temporal determinants of food choice and characterize harmful patterns in dietary behaviors, in a case study of food purchasing at EPFL campus. We identify spatial proximity, food item pairing, and academic schedules (yearly and daily) as important determinants driving the on-campus food choice. The case studies demonstrate the potential of food sales logs for measuring nutrition and highlight the breadth and depth of future possibilities to study individual food-choice determinants. We describe how these insights provide an opportunity for stakeholders, such as campus offices responsible for managing food services, to shape the nutritional environment and improve health and sustainability by designing policies and behavioral interventions. Finally, based on the insights derived through the case study of food purchases at EPFL campus, we identify five future opportunities and offer a call to action for the nutrition research community to contribute to ensuring the health and sustainability of on-campus populations-the very communities to which many researchers belong.
摘要：
虽然饮食会影响健康和环境，测量和改变营养是具有挑战性的。传统的测量方法面临挑战,设计和实施改变行为的干预措施在概念和逻辑上都很复杂。大学校园等当地社区为塑造营养环境和促进健康和可持续发展提供了独特的机会。本研究调查了通常作为常规业务操作一部分收集的被动感知食物购买日志如何用于监视和测量校园食物消费并了解食物选择决定因素。首先,根据八年来在大型大学校园收集的3800万份销售日志，我们进行统计分析以量化食物选择的时空决定因素，并表征饮食行为中的有害模式，在EPFL校园的食品采购案例研究中。我们确定空间接近度，食品配对，和学术时间表（每年和每天）作为驱动校园食物选择的重要决定因素。案例研究证明了食品销售日志在衡量营养方面的潜力，并强调了研究个人食品选择决定因素的未来可能性的广度和深度。我们描述了这些见解如何为利益相关者提供机会，例如负责管理食品服务的校园办公室，通过设计政策和行为干预来塑造营养环境并改善健康和可持续性。最后,基于通过EPFL校园食品购买案例研究得出的见解，我们确定了五个未来的机会，并呼吁营养研究社区采取行动，以确保校园人口的健康和可持续性-许多研究人员所属的社区。
