The Study
Quality and reliability assessment of myocardial infarction short videos on Bilibili and TikTok: A cross-sectional study
This study looked at a bunch of short videos about heart attacks on two apps and counted what they talked about and how good they seemed. It didn’t test if watching them changes how people behave or get healthier—it just described what’s out there.
Analysis score
Maximum 44 for a cross-sectional study.
Where the score came from
Lots of short videos about heart attacks exist on TikTok and Bilibili, but most only show symptoms and treatment — not how to avoid getting one in the first place.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 544 / 100
Quality score
Snapshots of a population at a single point in time, or descriptions of small groups. Can identify correlations and prevalence, but cannot determine cause and effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1This is dangerous because people might think popular videos are trustworthy — but they’re missing key info on how to prevent heart attacks, which could save lives.
- 2Only 4.25% of videos talked about prevention; 15% talked about long-term risk.
- 3Videos by real doctors scored much higher on quality checks.
- 4But videos with the most likes, shares, and comments were NOT the most accurate ones.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Digital Health
Year
2026
Authors
Juan Tao, Yimin Lin, Kaidi Zhao, Haogeng Wang, Yang Shi
Related Content
Claims (6)
Health and nutrition messages based on scientific facts receive less public attention and commercial promotion than exaggerated or sensationalized versions.
As of August 2025, most short videos about heart attacks on TikTok and Bilibili focus on symptoms, causes, and treatments, but very few explain how to prevent heart attacks or understand population-level risk, with only 4.25% of videos covering prevention and 15.03% covering epidemiology.
On TikTok and Bilibili, videos about heart attacks that get the most likes and shares are not necessarily more accurate or informative than videos with fewer interactions — popularity doesn’t mean quality.
Most heart attack videos on TikTok and Bilibili are only moderately accurate — they often lack citations, omit key facts, and don’t clearly state where their information comes from, making it hard for viewers to judge reliability.
Heart specialist videos on TikTok and Bilibili are consistently more accurate and complete than videos made by non-experts, indicating that professional medical knowledge improves the reliability of health information on these platforms.
Heart attack videos on TikTok are shorter and get more likes and shares than those on Bilibili, but both platforms have similar levels of medical accuracy — meaning how the platform works affects how people watch, not how accurate the information is.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.