YouTube as a Source of Information for Dietary Guidance and Advisory Content in the Management of Non-Alcoholic Fatty Liver Disease

<b>Background/Objectives</b>: Fatty liver disease (FLD), particularly non-alcoholic fatty liver disease (NAFLD), is a growing global health concern that underscores the need for effective dietary management strategies. With over 25% of patients seeking dietary advice through platforms like YouTube, the quality and reliability of this information remain critical. However, the disparity in educational value and engagement metrics between professional and non-professional content remains underexplored. This study evaluates YouTube's role in disseminating dietary advice for FLD management, focusing on content reliability, engagement metrics, and the educational value of videos. <b>Methods</b>: This cross-sectional study systematically analyzed 183 YouTube videos on FLD and dietary advice. Videos were selected based on relevance, English language, and non-promotional content. Scoring systems, including DISCERN, Global Quality Score (GQS), and the Video Information and Quality Index (VIQI), were employed to assess reliability, quality, and educational value. Engagement metrics such as views, likes, dislikes, and interaction rates were analyzed across uploader categories, including healthcare professionals, patients, and undefined sources. <b>Results</b>: Videos uploaded by healthcare professionals demonstrated significantly higher DISCERN scores (4.2 ± 0.8) and GQS ratings (4.1 ± 0.6) compared to patient-generated content (DISCERN: 2.8 ± 0.9; GQS: 3.0 ± 0.7). However, patient-generated videos achieved higher engagement rates, with median views reaching 340,000 (IQR: 15,000-1,000,000) compared to 450,050 (IQR: 23,000-1,800,000) for professional videos. Nutritional recommendations spanned diverse approaches, including low-carb diets, Mediterranean diets, and guidance to avoid processed foods and sugars. A significant proportion of videos lacked evidence-based content, particularly among non-professional uploads. <b>Conclusions</b>: YouTube represents a widely accessed but inconsistent source of dietary advice for FLD. While healthcare professional videos exhibit higher reliability and educational value, patient-generated content achieves broader engagement, revealing a critical gap in trusted, accessible dietary guidance. These findings highlight the need for clinicians and content creators to collaborate in curating and disseminating evidence-based content, ensuring patients receive accurate, actionable advice for managing FLD.