In the world of science, it is rare to find a figure who, for nearly half a century, consistently refuses to teach but is nonetheless admitted to the most prestigious academies worldwide. Otto Heinrich Warburg was one such exception—a man wholly absorbed by the mysteries of life at the cellular level.
Physicist’s Son in the World of Chemistry
Born in Freiburg in 1883, Warburg grew up in the atmosphere of the scientific elite of Wilhelmine Germany. His father, Emil, held the position of president of the Physikalische Reichsanstalt, which opened the doors of the best laboratories in Europe to his son.
Young Otto did not follow in his father’s footsteps into physics. Instead, he chose chemistry and studied under Emil Fischer, one of the giants of organic synthesis of that era.
After earning a doctorate in chemistry in Berlin in 1906, Warburg surprised the scientific community with another turn. He decided to also obtain a medical doctorate, which he received in Heidelberg five years later.
This dual perspective proved crucial for his future discoveries. Combining physical and chemical methods with biological problems became his trademark.
The outbreak of World War I interrupted his promising scientific career. Warburg served in the Prussian Horse Guards, which, given his passion for horsemanship, may have provided a welcome diversion from laboratory routine. After the war ended in 1918, he took up a professorship at the Kaiser Wilhelm Institute for Biology.
The Discovery That Brought Fame
The breakthrough came when Warburg focused on oxidation processes in living cells. His research on how organisms use oxygen led to the identification of respiratory enzymes.
In 1931, the Nobel Committee recognized these achievements with the highest scientific honor. Warburg received the Nobel Prize for elucidating the nature and mechanism of the respiratory enzyme.
A year earlier, the Rockefeller Foundation had funded a dedicated institute for him. The Kaiser Wilhelm Institute for Cell Physiology in Berlin’s Dahlem district became his scientific kingdom.
There, Warburg could pursue his research without the need to split his time between lab work and teaching. He openly admitted that he was never a teacher and was grateful for the opportunity to devote himself entirely to experiments.
Subsequent years brought discoveries concerning flavins and nicotinamide as active groups of hydrogen-transferring enzymes. These findings, combined with earlier work on iron in oxygenases, provided a coherent picture of oxidation and reduction reactions occurring in living organisms.
Cancer Cells and Their Unusual Metabolism
One particularly intriguing aspect of Warburg’s research was the metabolism of tumors. The German scientist demonstrated that cancer cells could survive and thrive even in the absence of oxygen. This discovery shed new light on the nature of cancer and opened up new perspectives for future therapies.
Warburg formulated bold hypotheses about the relationship between weakened immune systems, metabolic disorders, and the development of neoplasms. He argued that cancer growth is an anaerobic process. These concepts were ahead of their time and continue to inspire researchers seeking the metabolic foundations of oncogenesis today.
In the final years of his scientific activity, Warburg expanded his interests to include chemotherapy for cancer and the mechanism of action of X-rays. Together with Dean Burk, he discovered the single-photon reaction of carbon dioxide splitting during photosynthesis. Even in old age, his mind remained open to new scientific challenges.
He died in Berlin in August 1970 as a member of academies in Berlin, Copenhagen, Rome, and many other centers. He remained a bachelor, and aside from science, his only pastime was horseback riding.
Autor
Margot Cleverly
Margot's journey into women's history began with a box of forgotten letters in a Cambridge archive – suffragettes whose voices had been silenced for over a century. Since then, she's been on a mission to uncover the stories history overlooked.
What she writes about: Queens who ruled from the shadows. Scientists whose male colleagues took credit. Revolutionaries who risked everything. But also ordinary women – those who survived wars, raised families through upheaval, and shaped their communities in ways no one bothered to record.
Margot turns historical figures into real people. She writes with warmth and detail, making centuries-old stories feel surprisingly relevant. Rigorous research meets accessible storytelling – no dusty academic jargon, just compelling narratives backed by solid facts.
When she's not writing, you'll find her in regional archives, collecting oral histories, or visiting sites connected to the women she writes about.