Diabetes mellitus is a class of metabolic diseases, all of them have in common high blood sugar (glucose) levels that stem from problems with insulin secretion, its action, or both. Usually, blood glucose levels are controlled by a hormone secreted by the pancreas known as insulin. When there is a rise in blood glucose levels, then the pancreas releases insulin to normalize the glucose level. There are mainly two types of diabetes: type 1 and type 2.
Both types are chronic diseases that affect the way blood sugar, or glucose regulation in the body. Glucose is like the fuel which feeds the body’s cells, but to enter cells it needs a key which is insulin.
Type 1: People with diabetes of this type don’t produce insulin.