Department of Nutrition and Dietetics, School of Health Sciences, University of the Peloponnese, Kalamata, Greece.
J Hum Nutr Diet. 2025 Feb;38(1):e13395. doi: 10.1111/jhn.13395.
Concerns have been raised regarding the quality of health information published on the World Wide Web, while studies accumulating similar evidence for nutrition-related information are scarce. The present review aimed to systematically accumulate and discuss the findings of studies evaluating the content quality of websites publishing nutrition-related information, based on the PRISMA statement.
Studies that have assessed the accuracy and readability of dietary advice published on websites/webpages were evaluated. The SPIDER framework was used for the systematic search of studies, and those that evaluated websites/webpages that did not contain nutritional information, were videos or social media, referred to health professionals, or contained information on a specific theme (e.g., dietary supplements), were excluded.
Twenty-nine studies were included in this review, assessing information, published mainly in English, on 18 different diet-related topics. Twenty of them classified websites and reported, also, results per category. Inconsistent information has been found on 16%-49.6% of websites, with this percentage rising to 54%-94% in the case of 'weight loss' information. Purely congruent with guidelines information was found on 18%-39.7% of websites. Commercial sites were inferior in terms of quality to the rest. The readability level was estimated as higher than the recommended in 9 out of 11 studies that assessed it.
Results of the present systematic review indicate that inaccurate and hard-to-read dietary advice is found on many websites, regardless of the dietary topic.
人们对互联网上发布的健康信息的质量表示担忧，而关于营养相关信息的研究则很少。本综述旨在基于 PRISMA 声明，系统地积累和讨论评估发布营养相关信息的网站内容质量的研究结果。
评估了评估网站/网页上发布的饮食建议准确性和可读性的研究。使用 SPIDER 框架进行系统搜索研究，排除了未包含营养信息、视频或社交媒体、针对健康专业人员或包含特定主题（例如膳食补充剂）信息的网站/网页的研究。
本综述共纳入 29 项研究，评估了主要以英语发布的 18 个不同与饮食相关的主题的信息。其中 20 项对网站进行了分类并按类别报告了结果。在 16%-49.6%的网站上发现了不一致的信息，在“减肥”信息的情况下，这一比例上升到 54%-94%。在 18%-39.7%的网站上发现了与指南信息完全一致的信息。商业网站的质量逊于其他网站。在评估可读性的 11 项研究中有 9 项表明其阅读水平高于建议水平。
本系统评价的结果表明，无论饮食主题如何，许多网站上都存在不准确且难以阅读的饮食建议。
