Learning about the disease and actively participating in the treatment is important, since complications are far less common and less severe in people who have well-managed blood sugar levels.[76][77] The goal of treatment is an HbA1C level of 6.5%, but should not be lower than that, and may be set higher.[78] Attention is also paid to other health problems that may accelerate the negative effects of diabetes. These include smoking, elevated cholesterol levels, obesity, high blood pressure, and lack of regular exercise.[78] Specialized footwear is widely used to reduce the risk of ulceration, or re-ulceration, in at-risk diabetic feet. Evidence for the efficacy of this remains equivocal, however.[79]
In this diabetes-related complication, an uncooperative stomach is slow to move food into the intestine, and does so unpredictably. The symptoms of gastroparesis include upper abdominal pain, nausea, vomiting, bloating, lack of appetite, and reflux, the flowing backward of stomach contents into the esophagus. Wild, unexplained swings in blood glucose are another clue that you may have gastroparesis. For example, blood glucose may go low if food isn’t absorbed until after mealtime insulin takes effect; later, blood glucose levels may spike, when the stomach finally ushers food into the intestine and there’s not enough remaining insulin on board.

If possible, find a pain center that your insurance will pay for. Pain centers should combine physical, mental, and medical approaches and provide support from both professionals and other people living with pain. Some have brief residential programs followed by outpatient services. Most are entirely outpatient, and appointments are scheduled for several times a week at first, until a person’s pain is controlled adequately. A pain center may provide physical therapy, counseling, medication, self-management training, and more.
Insulin serves as a “key” to open your cells, to allow the glucose to enter -- and allow you to use the glucose for energy.  Without insulin, there is no “key.”   So, the sugar stays -- and builds up-- in the blood. The result: the body’s cells starve from the lack of glucose.  And, if left untreated, the high level of “blood sugar” can damage eyes, kidneys, nerves, and the heart, and can also lead to coma and death. 
Type 2 diabetes: Type 2 diabetes affects the way the body uses insulin. While the body still makes insulin, unlike in type I, the cells in the body do not respond to it as effectively as they once did. This is the most common type of diabetes, according to the National Institute of Diabetes and Digestive and Kidney Diseases, and it has strong links with obesity.