Emil Theodor Kocher
surgeon, laureate of the 1909 Nobel Prize in Medicine (1841-1917)

Emil Theodor Kocher (25 August 1841 – 27 July 1917) was a Swiss physician and medical researcher who received the 1909 Nobel Prize in Physiology or Medicine for his work in the physiology, pathology and surgery of the thyroid. Among his many accomplishments are the introduction and promotion of aseptic surgery and scientific methods in surgery, specifically reducing the mortality of thyroidectomies below 1% in his operations.
Kocher was the first Swiss citizen and first surgeon to ever receive a Nobel Prize in Medicine. He was considered a pioneer and leader in the field of surgery in his time.
Early life and personal life
Childhood
Kocher's father was Jakob Alexander Kocher (1814–1893), the sixth of seven children to Samuel Kocher (1771–1842), a carpenter, and Barbara Sutter (1772–1849). Jakob Alexander Kocher was a railway engineer and he moved in 1845 to Burgdorf, Switzerland (near Bern), because of his job as regional engineer of Emmental (Bezirksingenieur). He was named chief engineer for street and water in the canton of Bern at the age of 34 years and he moved with his family to the capital, the city of Bern. In 1858 he left the states service and managed several engineering projects around Bern.
Theodor Kocher's mother was Maria Kocher (née Wermuth) living from 1820 to 1900. She was a very religious woman and part of the Moravian Church; together with Jakob Alexander, she raised a family of five sons and one daughter (Theodor Kocher was the second son).
“Emil Theodor Kocher” enters the record as surgeon, laureate of the 1909 Nobel Prize in Medicine (1841-1917). Crown Archives preserves that source wording while asking what Emil, Theodor and Kocher can confirm, complicate or overturn.
Why this record matters
“Emil Theodor Kocher” is worth following because a concise public description often conceals a longer documentary argument. Here, Emil, Theodor and Kocher provides the most credible route into that argument.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Aug 27, 2026. The linked authority identifier is Q115478. VIAF identifies the subject as 53076722. The Library of Congress control number is n83329856. 4 of 5 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 1841, 1917, 1909 and 1814.
A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “Emil Theodor Kocher”, its source revision and the description used here.
- Expand the search: follow Emil Theodor Kocher primary sources, Emil Theodor Kocher archive and Emil research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Emil Theodor Kocher”?
- Is the terminology current, historical or disputed?
- Has classification or technical consensus changed since the cited source?
Search terms from this dossier
This entry incorporates text from “Emil Theodor Kocher” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.