# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/john-macleod
# Generated: 2026-08-31T15:46:00.120Z

schema: https://schema.org/Person
url: "https://fame.am/person/john-macleod"
name: "John Macleod"
slug: "john-macleod"
description: "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."
tagline: "Nobel prize-winning Scottish physician and physiologist; co-discoverer of insulin"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/J.J.R._Macleod_ca._1928.png?width=1200"
gender: "male"
country:
  name: "United Kingdom"
  isoCode: "GB"
category:
  name: "Doctors"
  slug: "doctors"
profileType:
  name: "Doctor"
  slug: "doctor"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1876-09-06"
deathDate: "1935-03-16"
livingStatus: "DECEASED"
scores:
  popularity:           58.58
  momentum:             17.07112970711297
  historical:           22.74914266666667
  currentAttention:     12.75403466826061
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "RISING"
ranks:
  global:   null
  country:  null
  category: 77
tags:
  - name: "Scientists"
    slug: "scientists"
  - name: "Doctor"
    slug: "doctor"
  - name: "Medicine"
    slug: "medicine"
  - name: "Chemistry"
    slug: "chemistry"
  - name: "United Kingdom"
    slug: "united-kingdom"
  - name: "Europe"
    slug: "europe"
  - name: "20th Century"
    slug: "20th-century"
sources:
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    title: "Wikidata"
    type:  "WIKIDATA"
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    title: "Wikipedia"
    type:  "WIKIPEDIA"
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    title: "Pantheon 2.0"
    type:  "DATABASE"
  - url: "https://azb.wikipedia.org/wiki/%D8%AC%D8%A7%D9%86_%D9%85%DA%A9%D9%84%DB%8C%D8%AF"
    title: "جان مکلید"
    type:  "WIKIPEDIA"
  - url: "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"
    title: "Джон Джэймс Рыкард Маклеад"
    type:  "WIKIPEDIA"
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    title: "জন জেমস রিকার্ড ম্যাক্লাউড"
    type:  "WIKIPEDIA"
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    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
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    title: "John James Rickard Macleod"
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    type:  "WIKIPEDIA"
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    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
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    title: "John James Richard Macleod"
    type:  "WIKIPEDIA"
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    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
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    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
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    title: "Τζων Μακλήοντ"
    type:  "WIKIPEDIA"
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    title: "John Macleod (physiologist)"
    type:  "WIKIPEDIA"
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    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
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    title: "John James Richard Macleod"
    type:  "WIKIPEDIA"
  - url: "https://eu.wikipedia.org/wiki/John_James_Rickard_Macleod"
    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
  - url: "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)"
    title: "جان مک‌لاود (فیزیولوژیست)"
    type:  "WIKIPEDIA"
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    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
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    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
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    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
  - url: "https://gl.wikipedia.org/wiki/John_James_Rickard_Macleod"
    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
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    title: "ג'ון מקלאוד"
    type:  "WIKIPEDIA"
  - url: "https://hr.wikipedia.org/wiki/John_James_Rickard_Macleod"
    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
  - url: "https://hu.wikipedia.org/wiki/John_James_Rickard_Macleod"
    title: "John James Rickard Macleod"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%AC%D9%88%D9%86_%D9%85%D9%83%D9%84%D9%8A%D9%88%D8%AF"
    title: "جون مكليود"
    type:  "WIKIPEDIA"
  - url: "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)"
    title: "جون مكليود (دكتور من المملكه المتحده)"
    type:  "WIKIPEDIA"

# bio (long form, separated for readability)
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.