diabetes timeline By meganklink123 50 First description of diabetes 300 Indians Note the Swarming of Ants Around Diabetic Urine 1600 Oxford Physician notes the Sweet Smell of Diabetic Urine 1706 First Treatment of Dietary Restrictions Used 1830 Discovery of Liver Storing Glycogen 1879 Liver Theory Disproved 1921 Discovery of Insulin 1922 Shortage of Insulin in Toronto 1922 Insulin was Crystalized Jan 11, 1922 First Human Patient to Receive Insulin Jan 23, 1922 Purified Insulin Injections Given to Patients 1923 Insulin Was Used to Treat Diabetes Commercially 1936 Protamine Zinc Insulin is Introduced 1954 Lente Insulins Introduced 1957 Scientific Investigation of Diabetes is Improved 2014 Inhalable Insulin Made Available