发表机构
Politecnico di Torino; KTH Royal Institute of Technology; ISI Foundation（都灵理工大学; 皇家理工学院; ISI基金会）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过混合方法分析3129个饮食相关YouTube视频，发现个人故事类内容质量较高，而补充剂评论质量较低，且负面身体形象提及增加观看量，正面提及增加互动率，并识别出推广特定减肥产品的风险视频。
AI 中文摘要
社交媒体的广泛使用，尤其是基于图像和视频的平台，已使其成为与健康和饮食相关的规范性和信息性内容的关键来源。这可能有助于发展紊乱的饮食行为，或潜在的饮食失调。本研究采用混合方法分析，应用于3129个关于饮食和减肥的YouTube视频，以量化低质量信息和过度关注身体形象的风险水平。我们改编了文献中的三个质量评估框架——PRHISM、HONcode和SMEC——以适应在线视频情境，对数据样本进行手动标注，并设计了一个LLM内容表征管道，以对视频的内容质量和人体关注度进行评分。令人惊讶的是，我们发现围绕个人故事叙述和心态与动机的视频与更高质量的内容相关联，而补充剂评论（可以说是更医学敏感的）则不然。此外，与体重测量和负面身体形象相关的身体提及与观看量增加相关联，而与正面身体形象相关的提及与点赞和评论的参与率增加相关联，但与观看量无关。令人担忧的是，我们发现了一组被归类为“音乐”的视频，这些视频推广膳食补充剂Mitolyn和注射减肥药Mounjaro。随着基于视频的平台日益流行，尤其是在年轻受众中，诸如此处呈现的研究对于开发基于实证的工具以增强有害内容检测和指导更有效的审核实践至关重要。
英文摘要
The widespread use of social media, particularly image- and video-based platforms, has turned them into key sources of both normative and informational content related to health and diet. This may contribute to the development of disordered eating behaviors or, potentially, eating disorders. This study uses mixed-methods analysis applied to 3129 YouTube videos about diet and weight loss in order to quantify the level of risk of low-quality information and heightened focus on the body image. We adapt three quality measurement frameworks from the literature -- PRHISM, HONcode and SMEC -- to the online video context, perform manual annotation of a sample of the data, and design an LLM content characterization pipeline to score the videos on the quality of their content and the focus on the human body. Surprisingly, we find that videos around personal storytelling and mindset & motivation are associated with higher-quality content, whereas supplement reviews (arguably more medically sensitive ones) are not. Further, the body-related mentions of weight measurement and negative body image are associated with an increased viewership, whereas the mentions of positive body image are associated with an increased engagement rate in terms of likes and comments, but not viewership. Worryingly, we find a cluster of videos categorized as "music" which promote the dietary supplements Mitolyn and the injectable weight loss drug Mounjaro. As video-based platforms grow in popularity, particularly among younger audiences, studies such as the one presented here are essential for developing empirically grounded tools to enhance the detection of harmful content and inform more effective moderation practices.
CommentsInternational Conference on Information Technology for Social Good 2026
