There are multiple causes. Some of which identified are: * Pancreatic disease * Pancreatic resection * Chronic pancreatitis (caused by exocrine insufficiency, maldigestion, and malnutrition). * Lacking genes in the E2F group. * In 2021, Venturi reported that pancreas is able to absorb in great quantity radioactive cesium (Cs-134 and Cs-137) causing a severe and permanent pancreatitis with damage of pancreatic islands, and causing <unk>  (pancreatogenic). In fact,<unk>  mellitus increased in contaminated population, particularly children and adolescents, after Fukushima and Chernobyl nuclear incidents. At the same time, worldwide pancreatic diseases, diabetes and environmental radiocesium are increasing.
Type 3c diabetes
Type 3 diabetes
Type 1 diabetes
Type 2 diabetes
Lifestyle causes of type 2 diabetes
Cystic fibrosis–related diabetes
Prediabetes
Maturity onset diabetes of the young