Members of the lay public are turning increasingly to the internet to answer health-related questions. Some authors suggest that the widespread availability of online health information has dislodged medical knowledge from its traditional institutional base and enabled a growing role for alternative or previously unrecognized health perspectives and ‘lay health expertise’. Others have argued, however, that the organization of information retrieved from influential search engines, particularly Google, has merely intensified mainstream perspectives because of the growing consolidation of the internet with (...) traditional, commercial media sources. In this paper we describe an analysis of ‘first page’ results retrieved through Google searches about several common health concerns, each of which has been the subject of controversy as a result of uncertain aetiology, diagnoses, outcomes and/or contested approaches to treatment. Our findings suggest that the online search tactics used by most lay health information seekers produce sources of information that, for the most part, reflect mainstream biomedical discourses, often linked to commercial interests, rather than a plurality of voices that offer a variety of perspectives and resources. We discuss the implications for health-interested internet searchers who fail to look beyond the ‘first page’. (shrink)