["On a strictly scientific basis.” German constitutional medicine establishing itself, 1911–1921].

In the years between 1911 and 1921, modern constitutional medicine established itself as an interdisciplinary research program in German-speaking countries. Untouched by later holistic interpretations and still far from the ,,crisis of medicine“ of the late 1920s early constitutional medicine was very attractive due to its scientific self-characterisation. Thus, it became influential across the medical disciplines. This paper examines history and subject matter of German modern constitutional medicine in its first decade, starting in 1911, the year constitutional medicine was first publicly discussed by the Wiesbaden congress for internal medicine, including its development during World War I and closing with the first textbooks for medical students in 1921.