John Macleod
Nobel prize-winning Scottish physician and physiologist; co-discoverer of insulin · United Kingdom · Doctors · Lived 1876 to 1935 · aged 58
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Something wrong?A Scottish biochemist who shared the 1923 Nobel for insulin - then spent years fighting claims he barely contributed. Banting said Macleod's role was negligible; decades later, independent review said otherwise.
A life in dates
Also in Deutsch
Photos 8
J.J.R. Macleod ca. 1928.jpg?width=1200)
Citation to F. G. Banting and J. J. R. Macleod accompanying the Nobel Prize (12309173456)
Grave of John James Rickard MacLeod.jpg?width=1200)
Invitation to banquet held in honour of F. G. Banting and J. J. R. Macleod (12308739073)
J.J. Rickard MacLeod; Physiology and biochemistry... Wellcome L0015807.png?width=1200)
J.J.R. Macleod ca. 1928 (cropped)
John James Rickard Macleod gravestone
John James Rickard Macleod plaqueAwards
About this person
John James Rickard Macleod was born on 6 September 1876, a Scottish biochemist and physiologist who spent his career on topics ranging across physiology and biochemistry, with carbohydrate metabolism at the center. During his time as a lecturer at the University of Toronto, he played a part in the discovery and isolation of insulin, work that earned him and Frederick Banting the 1923 Nobel Prize in Physiology or Medicine. The award sparked controversy: Banting's account painted Macleod's contribution as negligible, a version that stuck for years. Only decades after the fact did an independent review grant Macleod a far greater role than the original narrative allowed. He died on 16 March 1935.
Doctors from the United Kingdom 6
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