How did Rudolf Virchow connect cell theory with human disease?

Rudolf Virchow revolutionized medicine by applying cell theory to the study of human disease, shifting the focus of pathology from organs and tissues to the individual cells themselves.1

While earlier theories attributed illness to imbalances in bodily fluids or lesions in organs, Virchow argued that diseases originate primarily within cells. He championed the concept that all cells, including those in diseased tissue, arise from preexisting cells—a principle famously summarized by the aphorism omnis cellula e cellula.12

By establishing this system of cellular pathology, Virchow transformed scientific understanding of pathological processes. His work allowed for a more precise analysis of conditions such as inflammation, tumors, and thrombosis. Furthermore, his commitment to rigorous observation led him to standardize autopsy techniques, ensuring that the entire body could be examined to reveal the cellular origins of lesions that might otherwise go undetected.2