Type 1 diabetes is an autoimmune condition where the body destroys the insulin-producing cells in the pancreas. This prevents the body from properly absorbing and using blood glucose for energy. People with type 1 diabetes must take insulin, usually through injections or a pump, to survive. Carbohydrates raise blood glucose levels the most, so counting and matching carbohydrate intake to insulin dosage is important for blood sugar management. Exercise also helps the body use insulin more effectively.

1. Understanding Type 1 Diabetes