Newspapers are important sources of information about medical advances for many lay people and can influence those working in the health service. Medical journalists on newspapers routinely use general medical journals to obtain information on research. The Lancet and BMJ are both examined carefully by broadsheet journalists in Britain each week. These papers published an average of 1.25 stories from these journals every Friday. The stories focused on serious diseases, topical health problems, and new treatments rather than social problems. The newspaper stories were based on the full research article and not the journals' press releases, although the press releases were valued as early information. Journalists relied heavily on the peer review processes of the journals in ensuring accuracy.