# Johannes Fibiger > Danish physician **Wikidata**: [Q216324](https://www.wikidata.org/wiki/Q216324) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Johannes_Fibiger) **Source**: https://4ort.xyz/entity/johannes-fibiger ## Summary Johannes Fibiger was a Danish physician and researcher renowned for his contributions to medical science, particularly in pathology and parasitology. He is most notably recognized for being awarded the Nobel Prize in Physiology or Medicine in 1926 for his discovery of the Spiroptera carcinoma, which demonstrated a link between parasites and cancer. ## Biography - Born: April 23, 1867 - Nationality: Kingdom of Denmark - Education: University of Copenhagen - Known for: Discovery of the Spiroptera carcinoma and its implications in cancer research - Employer(s): University of Copenhagen - Field(s): Pathology, parasitology, microbiology, anatomical pathology ## Contributions Johannes Fibiger's most significant scientific contribution was his discovery of what he termed *Spiroptera carcinoma*, a gastric cancer induced in rats by the parasitic nematode *Spiroptera neoplastica*. His research, conducted in the early 20th century, was groundbreaking in suggesting a causal relationship between parasitic infection and cancer development. Although later studies would refine and partially challenge his findings, his work laid early groundwork for the study of infectious causes of cancer, a field that would gain renewed interest with the discovery of *Helicobacter pylori*. Fibiger’s work was widely recognized, culminating in his receipt of the Nobel Prize in Physiology or Medicine in 1926. This made him the first person to receive a Nobel Prize for research conducted in a Nordic country. His contributions also extended to academic teaching and leadership in pathological research at the University of Copenhagen, where he influenced generations of medical researchers. ## FAQs ### What did Johannes Fibiger discover? Johannes Fibiger discovered *Spiroptera carcinoma*, a cancer in rats that he linked to infection by the nematode *Spiroptera neoplastica*. This was one of the first studies to suggest a parasitic cause for cancer. ### Why is Johannes Fibiger famous? He is most famous for being awarded the Nobel Prize in Physiology or Medicine in 1926, making him the first recipient from a Nordic country for this category of the prize. ### Where did Johannes Fibiger work? Fibiger worked primarily at the University of Copenhagen, where he conducted his research and taught pathology and bacteriology. ### What was Johannes Fibiger's educational background? He was educated at the University of Copenhagen, where he also later became affiliated as a professor and researcher. ### Did Johannes Fibiger receive any awards? Yes, he received the Nobel Prize in Physiology or Medicine in 1926 and was also awarded an honorary doctorate from the University of Paris. ## Why They Matter Johannes Fibiger's work marked a pivotal moment in the history of cancer research by introducing the idea that chronic irritation or infection could lead to cancer. His studies on *Spiroptera carcinoma* were among the earliest to explore environmental and parasitic causes of malignancy, laying the groundwork for future research into infectious carcinogenesis. Though his specific findings were later reassessed, the conceptual framework he introduced influenced the eventual discovery of viral and bacterial causes of cancer, such as human papillomavirus and *Helicobacter pylori*. His legacy includes not only his direct scientific contributions but also his role in shaping the methodology and ethical standards of experimental pathology. ## Notable For - First recipient of the Nobel Prize in Physiology or Medicine for research conducted in a Nordic country (1926) - Discovery of *Spiroptera carcinoma*, linking parasitic infection to cancer - Pioneering work in experimental pathology and microbiology - Long-standing academic affiliation with the University of Copenhagen - Influential role in the development of cancer research methodology - Receipt of an honorary doctorate from the University of Paris ## Body ### Early Life and Education Johannes Andreas Grib Fibiger was born on April 23, 1867, in Denmark. He pursued his higher education at the University of Copenhagen, where he later became a central figure in medical research and academia. His early academic focus was on pathology and microbiology, disciplines in which he would make significant contributions. ### Career Fibiger spent much of his professional life at the University of Copenhagen, where he served as both a researcher and educator. His work primarily focused on the relationship between parasites and cancer, a field that was in its infancy at the time. He held positions in anatomical pathology and contributed to the development of experimental methods in cancer research. ### Scientific Contributions Fibiger's most notable scientific achievement was his discovery of *Spiroptera carcinoma*, a gastric cancer in rats that he attributed to infection by the nematode *Spiroptera neoplastica*. His experiments involved feeding cockroaches infected with the parasite to rats, which subsequently developed cancerous growths. This work, published in the early 1900s, was groundbreaking in suggesting that parasites could be carcinogenic. In 1913, he published his findings in a comprehensive monograph titled *Die Carcinogenität der Nematoden*, which detailed his experimental methods and conclusions. His research was widely discussed in the scientific community and influenced the early understanding of cancer etiology. ### Nobel Prize and Recognition In 1926, Johannes Fibiger was awarded the Nobel Prize in Physiology or Medicine for his discovery of *Spiroptera carcinoma*. The award recognized his role in advancing the understanding of cancer causation and his methodological contributions to experimental pathology. This made him the first Nobel laureate from a Nordic country in this category. In addition to the Nobel Prize, Fibiger received honorary recognition from international institutions, including a doctorate honoris causa from the University of Paris, highlighting his influence beyond Denmark. ### Legacy and Influence Although later research would refine and partially challenge Fibiger's original conclusions about *Spiroptera carcinoma*, his work was foundational in the field of cancer research. It introduced the concept that chronic irritation or infection could lead to malignancy, a theory that would later be validated in the discovery of *Helicobacter pylori* and its link to gastric cancer. Fibiger's influence extended to the next generation of pathologists and microbiologists, many of whom built upon his experimental techniques. His work also contributed to the broader acceptance of the role of environmental factors in disease, influencing public health policies and cancer prevention strategies. ### Death and Commemoration Johannes Fibiger passed away on January 30, 1928. His contributions to science were commemorated in various ways, including the naming of the lunar crater Fibiger in his honor. His legacy continues to be recognized in the history of medical research, particularly in the fields of pathology and parasitology. His life's work underscores the importance of rigorous experimental design and the long-term impact of pioneering research, even when initial findings are later refined. Fibiger's influence persists in the ongoing study of infectious causes of cancer and the broader field of medical microbiology. ## References 1. Great Soviet Encyclopedia (1969–1978) 2. Integrated Authority File 3. [Source](https://wikisilkeborg.dk/index.php/Johannes_Fibiger) 4. LIBRIS. 2002 5. Find a Grave 6. [The Nobel Prize in Physiology or Medicine 1926. nobelprize.org](https://www.nobelprize.org/prizes/medicine/1926/summary/) 7. [Table showing prize amounts. Nobel Foundation. 2019](https://www.nobelprize.org/uploads/2019/04/prize-amounts-2020.pdf) 8. [Liste des docteurs honoris causa de l'Université de Paris de 1918 à 1933 inclus. Annales de l'Université de Paris. 1934](https://gallica.bnf.fr/ark:/12148/bpt6k93885z/f95.item) 9. International Standard Name Identifier 10. Who Named It? 11. Brockhaus Enzyklopädie 12. BnF authorities 13. Dansk Biografisk Leksikon 14. Gran Enciclopèdia Catalana 15. Proleksis Encyclopedia 16. Croatian Encyclopedia 17. [Source](http://www.nndb.com/lists/438/000106120/) 18. Freebase Data Dumps. 2013 19. Virtual International Authority File 20. nobelprize.org