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Charles Herbert Best

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Title: Charles Herbert Best  
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Subject: History of diabetes, University of Toronto Faculty of Medicine, Canadian Medical Hall of Fame, Insulin (medication), James Collip
Collection: 1899 Births, 1978 Deaths, American People of Canadian Descent, Canadian Medical Hall of Fame, Canadian Medical Researchers, Commanders of the Order of the British Empire, Companions of the Order of Canada, Diabetologists, Fellows of the American Academy of Arts and Sciences, Fellows of the Royal Society, Fellows of the Royal Society of Canada, Members of the Order of the Companions of Honour, People from Toronto, People from Washington County, Maine, University of Toronto Alumni, University of Toronto Faculty
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Charles Herbert Best

Charles Herbert Best
Born (1899-02-27)February 27, 1899
West Pembroke, Washington County, Maine
Died March 31, 1978(1978-03-31) (aged 79)
Toronto, Ontario
Nationality Canadian
Fields Physiologist
Alma mater University of Toronto
Known for Co-discoverer of insulin
Notable awards Flavelle Medal (1950)
Gairdner Foundation International Award (1971)
Order of Canada
Order of the British Empire
Order of the Companions of Honour
Spouse Margaret Mahon (1924–1978)

Charles Herbert Best, CC, CH, CBE, MD, FRS,[1] FRSC, FRCP (February 27, 1899 – March 31, 1978) was an American-Canadian medical scientist and one of the co-discoverers of insulin.


  • Biography 1
  • Co-discovery of insulin 2
  • Professor of physiology 3
  • Awards and honours 4
  • Honorary Degrees 5
  • See also 6
  • References 7
  • Further reading 8
  • External links 9


Born in West Pembroke, Washington County, Maine, he was the son of Luella Fisher and Herbert Huestis Best, Canadians from Nova Scotia.

Best married Margaret Hooper Mahon in Toronto in 1924 and they had two sons. One son, Dr. Henry Best was a well-regarded historian who later became president of Laurentian University in Sudbury, Ontario. Best's other son was Charles Alexander Best, a Canadian politician and geneticist.

Best is interred in Mount Pleasant Cemetery, Toronto (section 29) not far from Sir Frederick Banting.

Co-discovery of insulin

Best moved to Toronto, Ontario in 1915 where he started studying towards a bachelor of arts degree at University College, University of Toronto. In 1918, he enlisted in the Canadian Army serving with the 2nd Canadian Tank Battalion. After the war, he completed his degree in physiology and biochemistry.[2]

As a 22-year-old medical student at the University of Toronto he worked as an assistant to the surgeon Dr. Frederick Banting[3] and contributed to the discovery of the pancreatic hormone insulin, which enabled an effective treatment for diabetes. In the spring of 1921, Banting travelled to Toronto to visit J.J.R. Macleod, professor of physiology at the University of Toronto, and asked Macleod if he could use his laboratory to isolate pancreatic extracts from dogs. Macleod was initially sceptical, but eventually agreed before leaving on holiday for the summer. Before leaving for Scotland he supplied Banting with ten dogs for experiment and two medical students, Charles Best and Clark Noble, as lab assistants.

Since Banting only required one assistant, Best and Noble flipped a coin to see which would assist Banting first. Best won and took the first shift. Loss of the coin toss proved unfortunate for Noble, given that Banting decided to keep Best for the entire summer and eventually shared half of his Nobel Prize money and a part of the credit for the discovery of insulin. Had Noble won the toss, his career might have taken a different path.[4] MacLeod was overseeing the work of Frederick Banting, who had no experience of physiology, and his assistant Charles Best. In December, when Banting and Best were having difficulties in refining the pancreatic extract and monitoring glucose levels, MacLeod assigned the biochemist James Collip to the team. In January 1922, while Collip was working on insulin purification, Best and Banting administered prematurely their pancreatic extracts to 14-year-old Leonard Thompson, who suffered a severe allergic reaction. Eventually, Collip succeeded in preparing insulin in a more pure, usable form. Banting, Best and Collip shared the patent for insulin, which they sold to the University of Toronto for one dollar.

In 1923, the Nobel Prize Committee honoured Banting and J.J.R. Macleod with the Nobel Prize in Medicine for the discovery of insulin, ignoring Best and Collip. Banting chose to share half of the prize money with Best. The key contribution by Collip was recognised in McLeod's Nobel Speech, who also gave one-half of the prize to Collip .

Professor of physiology

Best succeeded Macleod as professor of physiology at University of Toronto in 1929.[5] During World Health Organization.

Awards and honours

The gravestone of Best (section 29) in Mt. Pleasant Cemetery

Best was elected a foreign honorary member of the American Academy of Arts and Sciences in 1948.[6] In 1967 he was made a Companion of the Order of Canada in recognition for "his contribution to medicine, particularly as co-discoverer of insulin."[7] He was a commander of the Civil Division of the Order of the British Empire[2] and was made a member of Order of the Companions of Honour in 1971 "for services to Medical Research."[8] He was a fellow of the Royal Society of London, the Royal Society of Canada, and was the first Canadian to be elected into the Pontifical Academy of Sciences.[2]

As a recipient of the Order of Canada He was awarded the Canadian version of the Queen Elizabeth II Silver Jubilee Medal in 1977.

In 1994 he was inducted into the Canadian Medical Hall of Fame. In 2004, he was inducted into the National Inventors Hall of Fame.

Dr. Charles Best Secondary School in Coquitlam, British Columbia, C.H. Best West Elementary School in Burlington, Ontario, and C.H. Best East Middle School in Toronto, Ontario, are named in his honour. His birthplace in Maine is listed on the United States National Register of Historic Places.

Honorary Degrees

Dr. Charles Best received 18 [2] Honorary Degrees from universities around the world including

See also


  1. ^  
  2. ^ a b c "Charles Herbert Best". University of Toronto. 
  3. ^ Best, C. H. (November 1, 1942). "Frederick Grant Banting. 1891-1941".  
  4. ^ Wright JR (December 2002). "Almost famous: E. Clark Noble, the common thread in the discovery of insulin and vinblastine". CMAJ 167 (12): 1391–6.  
  5. ^ "Charles Best".  
  6. ^ "Book of Members, 1780–2010: Chapter B" (PDF). American Academy of Arts and Sciences. Retrieved 24 June 2011. 
  7. ^ Office of the Governor General of Canada. Order of Canada citation. Queen's Printer for Canada. Retrieved 24 May 2010
  8. ^ "Supplement to the London Gazette".  
  9. ^
  10. ^
  11. ^
  12. ^
  13. ^
  14. ^
  15. ^

Further reading

  • Henry B. M. Best (2003). Margaret and Charley: The Personal Story of Dr. Charles Best, the Co-Discoverer of Insulin. Dundurn Press Ltd.  
  • John Waller (2002) Fabulous Science: fact and fiction in the history of scientific discovery, Oxford. See Chapter 11: "Painting yourself into a corner; Charles Best and the discovery of insulin", page 223.

External links

  • CBC Digital Archives. Chasing a Cure for Diabetes. Accessed 16 June 2008.
  • Dr. Charles Best Secondary School. Accessed 16 June 2008.
  • The Discovery of InsulinOntario Plaques, . Accessed 16 June 2008.
  • Order of Canada citation
  • University of Toronto. Banting and Best Department of Medical Research Charles Herbert Best. Accessed 16 June 2008.
  • "Rewriting Medical History: Charles Best and the Banting and Best Myth by MICHAEL BLISS". Accessed 23 July 2011.
  • Charles Best Papers, Thomas Fisher Rare Book Library.
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