Health information on Wikipedia read and required at least a university graduate reading level. The study's authors were concerned by Wikipedia's low readability, as people with autoimmune disorders often use Wikipedia to research their condition. A 2018 study evaluating 55 Wikipedia articles on neurosurgical topics found that they were significantly more difficult to read than the American Association of Neurological Surgeons's patient information articles, although both Wikipedia's articles and the AANS articles required a college reading level. Wikipedia co-founder Jimmy Wales has said that lack of health information increases preventable deaths in emerging markets and that health information from Wikipedia can improve community health.
Jimmy Wales edited his own biographical entry on the English Wikipedia. Writer Rogers Cadenhead drew attention to logs showing that in his edits to the page, Wales had removed references to Sanger as the co-founder of Wikipedia. Sanger commented that "having seen edits like this, it does seem that Jimmy is attempting to rewrite history. But this is a futile process because in our brave new world of transparent activity and maximum communication, the truth will out." Wales was also observed to have modified references to Bomis in a way that was characterized as downplaying the sexual nature of some of his