Type 1 diabetes is thought to be caused by an immune reaction (the body attacks itself by mistake). Risk factors for type 1 diabetes are not as clear as for prediabetes and type 2 diabetes. Known risk factors include:
- Family history: Having a parent, brother, or sister with type 1 diabetes.
- Age: You can get type 1 diabetes at any age, but it usually develops in children, teens, or young adults.
In the United States, White people are more likely to develop type 1 diabetes than African American and Hispanic or Latino people.
Currently, no one knows how to prevent type 1 diabetes.
