A recent research paper, "Warning labels for sugar-sweetened beverages and fruit juice: evaluation of 27 different labels on health effects, sugar content, energy and exercise equivalency", published in Public Health has evaluated the effectiveness of different warning labels for sugar-sweetened beverages (SSBs) and fruit juice, comparing 27 variations across six message types.
The research, conducted by the University of Adelaide and partner institutions, surveyed more than 3,600 Australians aged 14–60 who regularly consumed soda or fruit juice. Participants were shown warning labels in formats including graphic health effects, sugar content pictograms, sugar text, exercise equivalents, health text, and energy information, and rated their perceived effectiveness.
The findings indicate that simple, factual labels quantifying sugar content—such as those displaying the number of teaspoons of sugar—were consistently rated the most effective in discouraging consumption.
These labels performed strongly across measures of overall effectiveness, emotional response, and ability to influence behavior. In contrast, labels using general statements like “high in sugar” or providing calorie/kilojoule information were considered less persuasive, with participants often finding them vague or difficult to interpret.
Graphic health warnings depicting conditions such as diabetes or tooth decay were also seen as effective in generating strong emotional responses, though some respondents criticized them as extreme or comparable to tobacco warnings. Exercise-equivalent labels, which converted drink energy content into required walking or running activity, were found to capture attention but risked encouraging compensatory consumption rather than reducing intake.
Support for mandatory warning labels was high, with 71% of respondents favoring their inclusion on beverage bottles, 73% supporting their presence at point-of-sale locations, and 70% backing their use in advertisements. Nearly half also supported a tax on high-sugar drinks.
Researchers concluded that labels providing clear, quantifiable sugar information offer the strongest potential for public health policy, while cautioning against relying on industry-preferred calorie or exercise messaging, which were consistently the least effective. They recommended advancing sugar-teaspoon style warnings into mandatory policy frameworks to curb excessive consumption of sugary drinks.
Dr. Arun Gupta, Founder of the Breastfeeding Promotion Network of India (BPNI), Convenor of Nutrition Advocacy for Public Interest (NAPi), and former member of the Prime Minister’s Council on India’s Nutrition Challenges, said the study provides important lessons beyond Australia.
“This original research study provides evidence on what works as a warning label in order to decrease consumption of unhealthy diets sold as pre-packaged food items such as beverages and fruit juices. This would make sense on other food products as well,” he noted.
Gupta highlighted that similar evidence from Canada suggests front-of-pack labeling could significantly reduce intake of sugar, sodium, and saturated fat, potentially preventing or postponing large numbers of diet-related non-communicable disease deaths.
He urged Indian policymakers, who are currently deliberating front-of-pack nutrition labeling, to consider such evidence in the interest of public health and achieving nutrition policy objectives.
The study’s authors and independent experts alike conclude that clear, factual, and easy-to-understand warnings—particularly those quantifying sugar content—offer the strongest potential for effective policy interventions to curb excessive consumption of sugary drinks.
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