This document discusses the different types of diabetes, including type 1, type 2, and gestational diabetes. Type 1 diabetes occurs when the immune system destroys pancreatic beta cells, resulting in an inability to produce insulin. Type 2 diabetes involves insulin resistance and deficiency, usually beginning with resistance. Gestational diabetes affects females during pregnancy. The document also covers diabetes symptoms, causes such as overweight, inactivity, and family history, and ways to prevent and control diabetes through exercise, diet, medication, and lifestyle changes.