This article is intended to revive, through a critical reinterpretation, the bio-psychosocial model of George Engel. Engel’s first description in 1977, was very broad, encompassing too many aspects of medicine. In his later work, he focused his model as an epistemology for clinical medicine. However, what medicine mostly retained were minor aspects of the 1977 article, namely a multi-factorial approach to the etiology of diseases and a call to complement biomedicine with a psychosocial concern in order to re-humanize medicine. We (...) suggest that, properly understood as a clinical epistemology, Engel’s model retains its transformative potential for contemporary medicine.Our discussion begins with a.. (shrink)