# John Macleod

> 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.

*Nobel prize-winning Scottish physician and physiologist; co-discoverer of insulin*

**Canonical URL:** https://fame.am/person/john-macleod

## Identity
- **Profile type:** Doctor ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Doctors
- **Country:** United Kingdom
- **Born:** 1876-09-06
- **Died:** 1935-03-16
- **Status:** deceased
- **Gender:** male

## Bio

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.

## Fame
- **Popularity score:** 58.6 / 100
- **Momentum:** 17.1 / 100  (trend: RISING)
- **Historical depth:** 22.7 / 100
- **Now attention:** 12.8 / 100
- **Source confidence:** 60.0 / 100
- **Profile completeness:** 70.0 / 100
- **Category rank:** #77

## Topics
#Scientists, #Doctor, #Medicine, #Chemistry, #United Kingdom, #Europe, #20th Century

## Sources
- [Wikidata](https://www.wikidata.org/wiki/Q232024)
- [Wikipedia](https://en.wikipedia.org/wiki/John_Macleod)
- [Pantheon 2.0](https://pantheon.world/profile/person/John%20Macleod)
- [جان مکلید](https://azb.wikipedia.org/wiki/%D8%AC%D8%A7%D9%86_%D9%85%DA%A9%D9%84%DB%8C%D8%AF)
- [Джон Джэймс Рыкард Маклеад](https://be.wikipedia.org/wiki/%D0%94%D0%B6%D0%BE%D0%BD_%D0%94%D0%B6%D1%8D%D0%B9%D0%BC%D1%81_%D0%A0%D1%8B%D0%BA%D0%B0%D1%80%D0%B4_%D0%9C%D0%B0%D0%BA%D0%BB%D0%B5%D0%B0%D0%B4)
- [জন জেমস রিকার্ড ম্যাক্লাউড](https://bn.wikipedia.org/wiki/%E0%A6%9C%E0%A6%A8_%E0%A6%9C%E0%A7%87%E0%A6%AE%E0%A6%B8_%E0%A6%B0%E0%A6%BF%E0%A6%95%E0%A6%BE%E0%A6%B0%E0%A7%8D%E0%A6%A1_%E0%A6%AE%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A6%95%E0%A7%8D%E0%A6%B2%E0%A6%BE%E0%A6%89%E0%A6%A1)
- [John James Rickard Macleod](https://bs.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [John James Rickard Macleod](https://ca.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [جۆن مەکلیۆد](https://ckb.wikipedia.org/wiki/%D8%AC%DB%86%D9%86_%D9%85%DB%95%DA%A9%D9%84%DB%8C%DB%86%D8%AF)
- [John James Rickard Macleod](https://cs.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [John James Richard Macleod](https://cy.wikipedia.org/wiki/John_James_Richard_Macleod)
- [John James Rickard Macleod](https://da.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [John James Rickard Macleod](https://de.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [Τζων Μακλήοντ](https://el.wikipedia.org/wiki/%CE%A4%CE%B6%CF%89%CE%BD_%CE%9C%CE%B1%CE%BA%CE%BB%CE%AE%CE%BF%CE%BD%CF%84)
- [John Macleod (physiologist)](https://en.wikipedia.org/wiki/John_Macleod_(physiologist))
- [John James Rickard Macleod](https://es.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [John James Richard Macleod](https://et.wikipedia.org/wiki/John_James_Richard_Macleod)
- [John James Rickard Macleod](https://eu.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [جان مک‌لاود (فیزیولوژیست)](https://fa.wikipedia.org/wiki/%D8%AC%D8%A7%D9%86_%D9%85%DA%A9%E2%80%8C%D9%84%D8%A7%D9%88%D8%AF_(%D9%81%DB%8C%D8%B2%DB%8C%D9%88%D9%84%D9%88%DA%98%DB%8C%D8%B3%D8%AA))
- [John James Rickard Macleod](https://fi.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [John James Rickard Macleod](https://fr.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [John James Rickard Macleod](https://ga.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [John James Rickard Macleod](https://gl.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [ג'ון מקלאוד](https://he.wikipedia.org/wiki/%D7%92'%D7%95%D7%9F_%D7%9E%D7%A7%D7%9C%D7%90%D7%95%D7%93)
- [John James Rickard Macleod](https://hr.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [John James Rickard Macleod](https://hu.wikipedia.org/wiki/John_James_Rickard_Macleod)
- [جون مكليود](https://ar.wikipedia.org/wiki/%D8%AC%D9%88%D9%86_%D9%85%D9%83%D9%84%D9%8A%D9%88%D8%AF)
- [جون مكليود (دكتور من المملكه المتحده)](https://arz.wikipedia.org/wiki/%D8%AC%D9%88%D9%86_%D9%85%D9%83%D9%84%D9%8A%D9%88%D8%AF_(%D8%AF%D9%83%D8%AA%D9%88%D8%B1_%D9%85%D9%86_%D8%A7%D9%84%D9%85%D9%85%D9%84%D9%83%D9%87_%D8%A7%D9%84%D9%85%D8%AA%D8%AD%D8%AF%D9%87))

---
Generated by Fame.am · https://fame.am/person/john-macleod