Purchases of sugary drinks could be reduced by pictorial health warnings, reports research publishing February 1st in the open access journal PLOS Medicine. A trial in a naturalistic store setting found parents bought fewer sugary drinks when products displayed pictorial warnings about type 2 diabetes or heart damage, as compared with barcode labels. The study suggests that policies requiring pictorial health warnings on sugary drinks could reduce purchases of these products.
Children in the US consume more than the recommended levels of sugary drinks, increasing their risk of a variety of chronic diseases, including type 2 diabetes and heart disease. Research has found that text warnings can reduce sugary drink consumption, but the effects of pictorial warnings remain largely uninvestigated.
Marissa G Hall and colleagues at the University of North Carolina at Chapel Hill randomly assigned 325 parents of children aged 2-12 to an intervention arm or control arm and asked them to choose a drink and a snack for their child plus a household item in a naturalistic store laboratory. The intervention group had pictorial health warnings about type 2 diabetes or heart disease displayed on drinks, while controls had barcode labels.
In the control group 45% of parents bought a sugary drink for their child, compared to 28% in the pictorial warning group. Calories (kcal) from purchased sugary drinks were also reduced, with an average of 82 kcal for controls vs. 52 kcal for the pictorial warnings group. Parents in the intervention arm reported thinking more about their decision and the impacts of sugary drinks as well as lower intentions to serve sugary drinks to their child. Pictorial warnings could be a promising option for reducing purchases of sugary drinks for children, and related health outcomes.
Corresponding author Lindsey Smith Taillie adds, “Kids in the US consume too many sugary drinks, increasing their risk of a variety of health problems, from dental caries to chronic diseases like type 2 diabetes. We know from tobacco control research that warnings that include images are effective for reducing consumption. Our study is one of the first to show that this type of policy works for sugary drinks, too. This data provides evidence to support policies to require strong front-of-package warnings as a strategy to reduce children’s intake of sugary drinks.”
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Citation: Hall MG, Grummon AH, Higgins ICA, Lazard AJ, Prestemon CE, Avendaño-Galdamez MI, et al. (2022) The impact of pictorial health warnings on purchases of sugary drinks for children: A randomized controlled trial. PLoS Med 19(1): e1003885. https://doi.org/10.1371/journal.pmed.1003885
Author Countries: United States
Funding: This research was supported by grant #76290 from the Robert Wood Johnson Foundation through its Healthy Eating Research program: https://healthyeatingresearch.org/. General support was provided by NIH grant to the Carolina Population Center, grant numbers P2C HD050924 and T32 HD007168. K01HL147713 from the National Heart, Lung, and Blood Institute of the NIH supported MGH's time writing the paper. AHG was supported by T32 HL 098048. The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH. https://www.nih.gov/. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
Method of Research
Randomized controlled/clinical trial
Subject of Research
Competing interests: The authors have declared that no competing interests exist.