What is insulin?

An important hormone: Insulin is a hormone made by the pancreas that most importantly is involved in maintaining normal blood sugar by facilitating entry of glucose into cells. Insulin production is impaired in type 1 diabetes and Insulin is given as an injectable drug; it can be used in later type 2 dm when natural Insulin levels diminish, though the role of Insulin in type 2 is much more complicated.

Hormone for sugar: Insulin allows blood glucose (sugar) to get inside the cells for energy production. When there is an excess of sugar, Insulin helps to turn the sugar to fat for storage in case there is no food later.

Use glucose: Insulin allows the cells of the body to utilize the sugar that are floating in the blood. This sugar comes from the food you eat or sometimes from the liver while you are not eating.