Today is the 125th birthday of Sir Frederick Banting, he discovered insulin – treatment for diabetes

Sir Frederick Banting was a Canadian scientist whose pioneering work using insulin to treat diabetes earned him the Nobel prize. He only lived to be 49 but on November 14 – what would have been his 125th birthday

Frederick Banting was born on November 14 1891 in Alliston, a settlement in the Canadian province of Ontario. He served in the First World War despite initially being refused while in medical school for poor eyesight since the army wanted more doctors on the front line.

Sir Frederick Banting, the discoverer of insulin
After the war, Sir Frederick had become deeply interested in diabetes and the pancreas, reading much of the work on the matter that had come before him.

Scientists including Edward Schafer had speculated that diabetes was caused by a lack of a protein hormone produced in the pancreas, which Schafer had named insulin. Previous studies had noted that patients with diabetes had a damaged pancreas.


Sir Frederick got to work on looking into the matter further and in 1921 the University of Toronto gave him 10 dogs on which to practise. On one dog, the pancreas was removed, resulting in it getting diabetes.

On another test subject, Sir Frederick removed the dog’s pancreas but ground the pancreas up and created an injection. Giving the diabetic dog a few injections a day kept it healthy.

Frederick Banting with one of his test dogs
In 1922, a 14-year-old boy named Leonard Thompson became the first person with diabetes to be treated with insulin, and ended up recovering rapidly. Many other patients responded well to insulin injections.

Soon after the medical company Eli Lilling began producing large-scale quantities of insulin.

The discovery of the drug was seen as a miracle, saving millions of lives. The Nobel Prize in Physiology or Medicine was awarded to Sir Frederick and John Macleod, who had helped the research get funded, in 1923. King George V knighted Sir Frederick in 1934.

The doctor suffered an untimely death in 1941, at just 49, when the Lockheed Martin Super Electra plane he was flying en route to England lost power in both engines and crashed shortly after takeoff from Gander in Newfoundland. Sir Frederick died of his injuries the next day.

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