Exclusive: German research into responses to health queries raises fresh questions about summaries seen by 2bn people a month
How the ‘confident authority’ of AI Overviews is putting public health at risk
Google’s search feature AI Overviews cites YouTube more than any medical website when answering queries about health conditions, according to research that raises fresh questions about a tool seen by 2 billion people each month.
The company has said its AI summaries, which appear at the top of search results and use generative AI to answer questions from users, are “reliable” and cite reputable medical sources such as the Centers for Disease Control and Prevention and the Mayo Clinic.
However, a study that analysed responses to more than 50,000 health queries, captured using Google searches from Berlin, found the top cited source was YouTube. The video-sharing platform is the world’s second most visited website, after Google itself, and is owned by Google.
