Insulin Treatment for Diabetes
On February 11, 1922, the use of insulin to treat diabetes in a dog was announced in their first paper published on the subject by the Canadian surgeon Frederick Banting and his assistant Charles Best. The previous year, Best had made an extract from pancreatic tissue. At 10:15 a.m., on 10 Jul 1921, they injected a pinkish solution into a diabetic dog. After an hour, the blood glucose had dropped from 0.2 to 0.1%. They continued their research, and improved the purity of what they named insulin, the hormone responsible for controlling blood sugar levels. The discovery was one of the most revolutionary moments in medicine. Within a year, diabetics had hopes of living full and productive lives.