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From scroll to sale: online media engagement predicts adolescents' online supplement purchases in a nationally representative cross-sectional study

Year: 2026
Type: article
Study design: Observational Study
Abstract: Background: Adolescents are increasingly exposed to online health information promoting supplements as quick solutions for weight management and muscle development, raising public health concerns. Objective: This study investigated whether online media engagement-weight-and fitness-related information-seeking behaviors and the internalization of online appearance ideals-predicts adolescents' online purchasing of weight-loss and muscle-building products, with attention to differences between girls and boys. Methods: = 1.7). Measures included self-reported online weight- and fitness-related information-seeking behaviors, internalization of online appearance ideals (thin-ideal among girls; muscular ideal among boys), and online purchasing of weight-loss and muscle-building products. Hierarchical regression analyses were conducted separately for girls and boys, controlling for sociodemographic and body image variables. Results: Overall, 4.1% (63/1,521) purchased weight-loss and 19.1% (303/1,524) purchased muscle-building products online. For both girls and boys, greater engagement in seeking weight- and fitness-related information was associated with purchasing both product types. Internalization of online appearance ideals was significantly associated with muscle-building but not weight-loss product purchases. Conclusion: Findings highlight a novel pathway through which online media may shape youth consumer choices, pointing to the need for media literacy and body image-informed strategies to promote safer decision-making.
DOI: 10.3389/fpsyg.2026.1722369
Language: English
Field: Psychology
Open Access status: gold
Estimated APC paid: $3,801
OpenAlex ID: W7129024803
FWCI:
Cites: 51
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