Leonard Thompson, a 14-year-old boy with diabetes, was near death when he was treated with insulin in 1922. The insulin treatment was successful, and Leonard’s life was saved. He became the first person to be treated with insulin, and his case helped to establish insulin as a safe and effective treatment for diabetes. Elizabeth Hughes was diagnosed with diabetes at the age of 11 in 1919 and treated with insulin by Dr. Frederick Allen in 1922. Insulin was a new and experimental treatment at the time, and Dr. Allen was one of the first doctors in the United States to use it to treat diabetes. Theodore Ryder was a 14-year-old boy who was one of the first patients to be treated with insulin. He was suffering from diabetes, and his condition was severe