Quality and reliability of hyperlipidemia-related short videos on mainstream social media platforms: a cross-sectional study

Why Online Health Videos Matter for Your Heart

Many people now turn to short videos on their phones to learn about health problems, including high blood fats, or hyperlipidemia, which raise the risk of heart attacks and strokes. In China, where about four in ten adults have abnormal blood lipids but only a small fraction receive proper treatment, these videos could be powerful tools for public education—or dangerous sources of confusion. This study looked closely at how good and how trustworthy hyperlipidemia videos really are on three major Chinese platforms: TikTok (Douyin), Bilibili, and RedNote (Xiaohongshu).

Where the Videos Come From

Researchers searched each platform using the Chinese term for hyperlipidemia and collected the top 100 results, similar to what a typical user would see. After removing duplicates, ads, and off-topic clips, they ended up with 233 videos to analyze. Most were created by doctors, some by professional science communicators (such as health educators and popular science agencies), and a small number by patients and family members sharing their own stories. The team measured not only general quality and reliability, but also how easy videos were to understand and act on, and how fully they covered key topics like causes, symptoms, diagnosis, treatment, and prevention.

How Different Platforms Shape What You See

The three platforms turned out to have distinct personalities. Bilibili hosted longer, more detailed videos that scored higher on overall quality and on a new "content completeness" score that reflected how many important aspects of hyperlipidemia were covered. TikTok and RedNote, by contrast, offered shorter clips that viewers found easier to follow but that often skimmed over important medical details. Yet, in terms of basic trustworthiness—whether the information was broadly accurate and responsibly sourced—the platforms looked surprisingly similar. This suggests that the style and depth of health information are strongly shaped by platform culture and video format, even when the underlying accuracy is comparable.

Who Makes the Best Videos

When the researchers compared uploader types, they found a division of strengths. Science communicators produced the highest proportion of high-quality videos overall: their clips were well structured, clear, and engaging. Physicians, especially heart specialists, scored best on reliability measures that reward transparent sourcing and evidence-based explanations. Videos made by patients and families tended to be longest but scored lowest on both quality and reliability, suggesting that personal stories are valuable for support but should not be a main source of medical guidance. Within the physician group, cardiologists and other biomedically trained doctors generally outperformed Traditional Chinese Medicine practitioners on reliability and understandability.

Why Completeness Beats Clicks

A striking finding was that viewer reactions—likes, comments, shares, and saves—had virtually no link to how accurate or high quality a video was. Popular videos were just as likely to be mediocre as excellent. In contrast, the more complete a video’s content, the better it scored on quality, reliability, and usefulness for taking action. Longer videos tended to be more complete and higher quality, but they did not attract more engagement. In other words, the clips that do the best job of explaining hyperlipidemia are not the ones most pushed to users’ screens by current recommendation systems.

What This Means for Viewers and Platforms

For everyday users, the study’s message is simple but important: you cannot judge the truthfulness of a health video by its likes or its views. Instead, look for signs of completeness—does it explain what the condition is, why it happens, how it is diagnosed, and what treatments and prevention steps exist—and for clear medical expertise behind the account. For platforms and health professionals, the authors argue that recommendation algorithms should give more weight to creator credentials and how fully a video covers essential topics, rather than just to popularity. They also encourage doctors and skilled communicators to team up, creating content that is both scientifically sound and easy to absorb, so that people living with high blood lipids can make better-informed choices about protecting their hearts.

Citation: Yan, H., Jiang, Y., Zha, H. et al. Quality and reliability of hyperlipidemia-related short videos on mainstream social media platforms: a cross-sectional study. Sci Rep 16, 11974 (2026). https://doi.org/10.1038/s41598-026-42412-3

Keywords: hyperlipidemia, short video health education, social media misinformation, digital health quality, cardiovascular risk