Not just for doctors anymore”: How the merck manual became a consumer health “bible

The transformation of the Merck Manual of Diagnosis and Therapy from a “doctors-only” reference into a consumer health bible illuminates a critical era in the history of the twentieth-century medical book. Merck and Company restricted sales of its Merck Manual, first published in 1899 to offer up-to-date information for the busy practitioner, to physicians and other health care professionals until the 1970s. As more laypeople sought to get involved in their own health care deci-sion making, the Merck Manual developed a devoted following. In the late 1980s, with almost a quarter of its sales going to nonphysicians, Merck and Company decided to put out a home edition of its famous manual. This evolution provides important insights into both the history of the medical book and the doctor-patient relationship in the United States.