A study of 50,000+ health searches found Google’s AI Overviews cited YouTube more than any hospital, clinic, or health agency. Every month, around two billion people see AI Overviews, Google’s AI-powered search feature that generates summaries to users’ queries. Now, a new study is revealing a concerning pattern among some of these responses: When asked health-related questions, AI Overviews appears to turn to YouTube significantly more often than trusted medical sites.