Where does Google’s AI get its health advice? A study points to YouTube
- Jan 29
- 1 min read
A new study from the AI SEO tool SE Ranking published on January 14 reveals that AI Overviews is two to three times more likely to cite YouTube videos than “trusted medical sites” in response to health queries. But Google says that’s not the full picture.
To understand how AI Overviews collects its health guidance on the web, researchers at SE Ranking analyzed more than 50,000 health-related Google searches from German users. That location was chosen, per the study’s authors, for its strictly regulated healthcare system.
“If AI systems rely heavily on non-medical or non-authoritative sources even in such an environment,” the authors wrote in a published report, “it suggests the issue may extend beyond any single country.”
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