The purpose of this paper is to research Diabetes, or a group of metabolic diseases characterized by high blood sugar (glucose) levels that result from defects in insulin secretion, or its action, or both. Diabetes is a type of disease that starts to develop when your blood glucose, also called blood sugar, is higher than normal. Blood glucose is one of your very important main source of energy and comes from the food you eat. Insulin is a hormone formed by the pancreas. Insulin helps glucose from food get into your cells to be used for energy. In some cases your body doesn’t make enough insulin or doesn’t use insulin properly. Glucose will then stay in your blood and doesn’t reach your cells. As time goes on and having too much glucose in your blood can cause health problems. These problems can be dangerous to your blood vessels that supply vital organs. This is a huge problem because you’re at a higher risk of having a heart disease, stroke, kidney disease, vision problems, and nerve problems. Though diabetes has no cure, you can take steps to control your diabetes and stay healthy. When diagnosed with type 2 diabetes your body cannot make or use insulin as well. Diabetes can develop in anybody, any race, and any age. Although type 2 diabetes mainly occurs in middle-aged people. Most of these cases are results of poor eating habits, higher body weight, and lack of exercise. You can also develop type 2 by family generation. Diabetes is a very serious issue and can be fatal. If the cells that make the insulin send out the wrong amount of insulin at the wrong time, your blood sugar gets thrown off. High blood glucose can very significantly harm these cells, as well. People with type 2 diabetes usually can have stress, infections, and medications (such as corticosteroids) can also lead to severely elevated blood sugar levels. Checking your blood sugar often is very important for controlling your blood sugar. Your goal when checking your keep the blood glucose levels near the normal.Diabetes is a common factor in increasing the hardening and narrowing of the arteries leading to coronary heart disease, which is known as macrovascular disease.