Type 1 diabetes (T1D) is an autoimmune disease in which insulin-producing beta cells in the pancreas are mistakenly destroyed by the body’s immune system. T1D seems to have a genetic component. It occurs in children and adults. Its causes are not fully known, and there is currently no cure. People with T1D are dependent on injected or pumped insulin to survive.
Living with T1D is a constant balancing act. People with T1D must regularly monitor their blood-sugar levels, inject or continually infuse insulin through a pump, and carefully regulate insulin doses with eating and activity 24 hours a day.