Type 1 diabetes is an autoimmune disease that strikes both children and adults suddenly. It has nothing to do with diet or lifestyle. There is nothing you can do to prevent it. And, at present, there is no cure.In T1D, your pancreas stops producing insulin—a hormone the body needs to get energy from food. This means a process your body does naturally and automatically becomes something that now requires your daily attention and manual intervention. If you have T1D, you must constantly monitor your blood-sugar level, inject or infuse insulin through a pump, and carefully balance these insulin doses with your eating and activity throughout the day and night.However, insulin is not a cure for diabetes. Even with the most vigilant disease management, a significant portion of your day will be spent with either high or low blood-sugar levels. These fluctuations place people with T1D at risk for potentially life-threatening hypoglycemic and hyperglycemic episodes as well as devastating long-term complications such as kidney failure, heart attack, stroke, blindness, and amputation.