He serves in the Prussian Horse Guards during World War I.

For his discovery of the nature and mode of action of the respiratory enzyme, the Nobel Prize (in Physiology / Medicine) his awarded to Warburg in 1931. This discovery has opened up new ways in the fields of cellular metabolism and cellular respiration. He has shown, among other things, that cancerous cells can live and develop, even in the absence of oxygen.

One year later, he is habilitated with a thesis on physiology.

Otto Warburg dies on August 1, 1970.

From 1905 on, he studies medicine in Berlin, Munich and Heidelberg. In 1911, the obtains the degree of Doctor of Medicine in Heidelberg. There he works on the process of oxidation. His interest in the investigation of vital processes leads to attempts to relate these processes to phenomena of the inorganic world. His methods involve studies on the assimilation of carbon dioxide in plants, the metabolism of tumors, and the chemical constituent of the oxygen transferring respiratory ferment. 

In 1918 he is appointed Professor at the Kaiser Wilhelm Institute for Biology, Berlin-Dahlem. His research there leads to discoveries that explain oxidations and reductions in the living world. He also works on chemotherapeutics of cancer, and the mechanism of X-ray's action. He also discovers the "I-quantum reaction" that explains part of photosynthesis.

Otto Heinrich Warburg founds the Kaiser Wilhelm Institute for Cell Physiology (which was renamed as Max-Planck Institute for Cell Physiology in 1953 and closed in 1972). From 1931 until 1967, he is Director of this institute.

He passes the "Abitur" (exam required for entering university) in 1901, at the Friedrichswerdersches Gymnasium in Berlin, which focuses on the humanities.

From 1903 onwards, he continues his chemistry studies in Berlin with Emil Fischer, at the Friedrich-Wilhelms-Universität zu Berlin (today's Humboldt-university). He gains the degree, Doctor of Chemistry (Berlin), in 1906. Warburg's early research with Fischer deals with polypeptides.

He starts studying natural sciences at the Albert-Ludwigs-Universität Freiburg, focusing on chemistry.

Otto Heinrich Warburg is born on October 8, 1883, in Freiburg, Baden. His father was the physicist Emil Warburg.