72% of internet users say they looked online for health information within the past year.
77% of online health seekers say they began their last session at a search engine such as Google, Bing, or Yahoo. Another 13% say they began at a site that specializes in health information, like WebMD. Just 2% say they started their research at a more general site like Wikipedia and an additional 1% say they started at a social network site like Facebook.
The most commonly-researched topics are specific diseases or conditions; treatments or procedures; and doctors or other health professionals.
Half of online health information research is on behalf of someone else -- information access by proxy.