Diabetes is a chronic situation that affects how your body processes blood sugar (glucose). There are two types of diabetes: type 1 and type 2. Type 1 diabetes is an autoimmune disease in which the body's immune system attacks and destroys the cells in the pancreas that produce insulin. Insulin is a hormone that manage blood sugar levels in the body. As a result, people with type 1 diabetes are unable to produce insulin, and must take insulin injections or use an insulin pump to manage their blood sugar levels. Type 2 diabetes is a condition in which the body becomes resistant to insulin or does not produce sufficient insulin to maintain normal blood sugar levels. It is often related to lifestyle factors such as obesity, physical inactivity, and poor diet. Type 2 diabetes can often be managed with lifestyle changes, such as weight loss, exercise, and a healthy diet, but may also require medication and insulin therapy in some cases.