Karl Friedrich Heusinger (28 February 1792 â 5 May 1883) was a German pathologist who was a native of Farnroda.
He studied medicine in Jena and Marburg, and afterwards was an assistant to Karl Gustav Himly (1772âÂÂ1837) at the University of Göttingen. In 1813 he served as a military doctor in the Prussian Army, and later was a professor at the Universities of Jena (from 1821), Würzburg (from 1824) and Marburg (1829âÂÂ83).
Heusinger was a pioneer in the field of comparative pathology. In 1829 he published an influential work on physical and psychological anthropology titled Grundriàder physischen und psychischen Anthropologie. Among his other writings was a German translation of François Magendie's (1783-1855) Précis élémentaire de physiologie, and letters of correspondence with naturalist Charles Darwin. He also wrote a remarkable review of geophagy, titled Die sogenannte Geophagie oder tropische (besser: Malaria-) Chlorose als Krankheit aller Länder und Klimate.