You Won’t Believe Where Google AI Gets Medical Answers!
A study of 50,000+ health searches in Germany reveals that AI Overviews appear in 82% of results, with YouTube cited 2–3 times more frequently than trusted medical sources.
YouTube emerges as the single most-cited domain in AI citations, receiving roughly 4.5% of all citations or around 20,000 links, vastly outpacing competitors like NetDoktor and MSD Manuals.
Paradoxically, YouTube ranks only 11th in classic organic results for the same queries, yet dominates AI citations.
Only 34% of citations come from reliable medical sources, while government and academic sources combined account for just 1%.
The findings underscore that content credibility alone is insufficient—publishers must optimize for the formats Google's AI actually pulls from.
Your “Dr. Google” might be… “Dr. YouTube” now. We ran a study on more than 50 thousand health-related Google searches in Germany, and discovered that AI Overviews show up in 82% of them. No huge surprise there, but here’s the twist: in Google’s AI Overviews, YouTube gets cited 2 to 3 times more often than trusted medical sources. This makes YouTube the single most-cited domain with roughly 4 and a half percent of all citations or around 20 thousand links out of the analyzed batch. That’s three and a half times more than NetDoktor and over 2 times more than MSD Manuals. So, why exactly is this a big deal? Well, YouTube ranks only 11th in classic organic results for the same queries… but it’s #1 in AI citations. So the “AI answer layer” is choosing sources differently than the blue links. The bigger pattern in our blog study is even more sobering: only around 34% of citations come from “more reliable” medical sources. Furthermore,
government and academic sources combined only make up around 1%. These shocking results are among the primary reasons why The Guardian and Search Engine Land both decided to pick it up and spread the word. To sum up, if you publish health content, credibility alone isn’t enough — you need to be present in the formats Google’s AI actually pulls from. Check out the full breakdown on the SE Ranking blog. And think twice before treating AI summaries like medical advice.