School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
Interdisciplinary School of Health Sciences, University of Ottawa, Ottawa, ON, Canada.
Appl Physiol Nutr Metab. 2024 Dec 1;49(12):1678-1691. doi: 10.1139/apnm-2024-0224. Epub 2024 Aug 27.
There is limited evidence on how exposure to digital marketing of unhealthy foods affects youth's dietary behaviours. This study therefore aimed to examine the association between youth's self-reported digital food marketing exposure and dietary intakes, and explore predictors of frequent unhealthy food consumption. A survey was conducted among 1075 youth in Canada (aged 10-17 years) in April 2023. Proportional odds models examined associations between frequency of exposure to digital marketing of unhealthy foods and frequency of consumption of those foods, adjusted for sociodemographic characteristics and digital device usage. Compared with participants reporting no exposure to digital fast-food marketing in the past week, those exposed ≥4 times per week were more likely to consume fast food more frequently. Youth exposed to digital marketing of sugary drinks and salty/savoury snacks ≥1 time(s) in the previous week were more likely to consume these foods on a greater number of days, compared with those reporting no exposure to this marketing in the past week. Reporting exposure to digital marketing of desserts/sweet treats every day or more than once a day was associated with more frequent consumption of desserts/sweet treats. Province of residence (Ontario/Quebec) and total daily time spent online predicted more frequent consumption of fast food, sugary drinks, salty/savoury snacks, and desserts/sweet treats. Overall more frequent self-reported exposure to digital marketing of unhealthy foods is associated with more frequent consumption of these foods by Canadian youth. Regulations are needed to help protect youth from digital food marketing, which may help reduce their unhealthy food consumption.
关于接触不健康食品的数字营销如何影响青少年的饮食行为，证据有限。因此，本研究旨在调查青少年自我报告的数字食品营销接触与饮食摄入之间的关联，并探讨频繁食用不健康食品的预测因素。2023 年 4 月，在加拿大对 1075 名青少年（年龄在 10-17 岁之间）进行了一项调查。比例优势模型检验了在过去一周内接触数字营销不健康食品的频率与食用这些食品的频率之间的关联，调整了社会人口特征和数字设备使用情况。与报告过去一周内没有接触数字快餐营销的参与者相比，每周接触数字快餐营销≥4 次的参与者更有可能更频繁地食用快餐。与过去一周没有接触数字饮料和咸味/咸味零食营销的参与者相比，每周接触数字饮料和咸味/咸味零食营销≥1 次的参与者更有可能在更多天数内食用这些食品。报告每天或每天多次接触数字甜点/甜食营销与更频繁地食用甜点/甜食有关。居住地省份（安大略省/魁北克省）和每天在线总时间预测更频繁地食用快餐、含糖饮料、咸味/咸味零食和甜点/甜食。总体而言，青少年更频繁地自我报告接触数字营销不健康食品与更频繁地食用这些食品有关。需要制定法规来帮助保护青少年免受数字食品营销的影响，这可能有助于减少他们对不健康食品的消费。
