Insulin was first used to treat diabetes 96 years ago

Insulin was first used on a human to treat type 1 diabetes, on January 11, 1922. Biochemists Frederick Banting, Charles Best, and John Macleod discovered insulin and administered it to 14-year-old Leonard Thompson. While the first injection gave Thompson an allergic reaction, a second improvised dose was successful. Banting and Macleod were jointly awarded the 1923 Nobel Prize in Medicine.