YearrooWhen was insulin first used to treat diabetes?
192220th century · 1900s
Insulin is first used to treat diabetes.
A 14-year-old boy in Toronto was the first patient.
1922
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Around the same time
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- When was the Lincoln Memorial dedicated?1922
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Some events played out over months or years, so we use the year they are best known for. Spotted a mistake? Email [email protected].