There were scientific breakthroughs in 1922, one of the most notable being the discovery of insulin. In 1922, insulin was used for the first time to successfully treat a diabetic patient.
The patient was near death as a result of the metabolic imbalances that are characteristic of diabetes mellitus. Once administered a shot of insulin, the patient quickly regained his strength and his appetite came back to him. Soon, more diabetic patients began volunteering to be tested. The results conclusively yielded positive results. The insulin helped diabetics control their blood sugar and it also prevented pancreatic damage. This was considered one of the most important discoveries in the field of treating diabetics, and insulin is still used today to help diabetics live longer, healthier lives.