Type 1 diabetes is a serious, lifelong condition where your blood glucose level is too high because your body can't make a hormone called insulin.
Around 10% of people living with diabetes in the UK have Type 1 diabetes. It’s usually diagnosed when you’re a child or a young adult, but it can develop at any age. It’s the most common type of diabetes in childhood.
What causes Type 1 diabetes?
We don’t know exactly what causes Type 1 diabetes. But we do know it’s not caused by your lifestyle – it’s an autoimmune condition. This means that your body attacks and destroys the cells that make insulin, so the body stops making it. We need insulin to help move glucose out of our blood and into our cells, so we can use it for energy. Without insulin, blood glucose levels get too high. That’s why everyone with Type 1 diabetes uses insulin to treat their diabetes.