The blood then carries the glucose to cells throughout the body and then the glucose is used for energy. Insulin is a hormone produced in an organ called the pancreas. Insulin attaches to specific sites or areas on the wall of the cells and signals the cell to allow glucose to enter. The cells, and, therefore, your body, then have glucose for energy needed for every activity from pumping blood to running or jumping. With diabetes mellitus, something goes wrong with this process.
Food is turned into glucose but there is a problem with insulin production or use.
The glucose in the bloodstream cannot be used by the cells to make energy. This eventually leads to high blood glucose or sugar levels in the blood. There are two main types of diabetes mellitus. Type I diabetes usually appears suddenly in children or young adults. The cause is usually hereditary, or other factors that lead to the failure of the pancreas to produce insulin.