Type 1 diabetes occurs when the pancreas fails to make enough insulin. Make sure you follow 3 things always.. DIABETIC DIET, regular EXERCISE, and most important of all.. daily INSULIN doses. The pancreas is a long, flat gland in your belly that helps your body digest food. It also makes insulin. Insulin is kind of like a key that opens the doors to the cells of the body. It lets the glucose in. Then the glucose can move out of the blood and into the cells. So you have to supply external insulin.