Reporting on the results of the 1935 World Population Conference hosted in the capital of the “new Germany” for members of the nation's medical community, the renowned racial anthropologist and director of the prestigious Kaiser-Wilhelm-Institut für Anthropologie, menschliche Erblehre und Eugenik (KWIA), Eugen Fischer (1874–1967), commented on the significance of a new type of physician, one whose duties were intricately linked with the goals of the Nazi state. Just as the house doctor of old was able to prevent and recognize when an individual patient was in imminent medical danger by having carefully watched over his charge—intervening when necessary—so, too, must the Erbarzt (genetic doctor) do the same for the entire Volk by overseeing, and, if need be, managing, the hereditary lineages of all its composite members. This not merely entailed evaluating the trajectory of genetic diseases in different segments of the German population, but it also demanded something equally important. “As getreuer Ekkehardt [loyal Ekkehardt] with his hand on the pulse of the life of his Volk,” Fischer commented, the genetic doctor had to supervise its racial purity. This was to ensure that its racial essence—the presupposition of all cultural and mental attributes of the Volk—was inherited unchanged.